diff --git a/package-lock.json b/package-lock.json
index f9470e8..ddc2cac 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10953,7 +10953,7 @@
     },
     "node_modules/protobuf-ts": {
       "version": "1.0.0",
-      "resolved": "git+https://gitlab+deploy-token-50627:hv8mB4WkyvtjBpJKU1rN@gitlab.com/brandx/protobuf-ts.git#e476940999616206e9f2fa5cec3ac6807b18cd2d",
+      "resolved": "git+https://gitlab+deploy-token-50627:hv8mB4WkyvtjBpJKU1rN@gitlab.com/brandx/protobuf-ts.git#80ad2f8b81afe9e04f10f9b52a8250e6824d2b41",
       "dependencies": {
         "protobufjs": "^6.8.8"
       }
diff --git a/src/bin/BinSettings.tsx b/src/bin/BinSettings.tsx
index 413ac1f..92ced48 100644
--- a/src/bin/BinSettings.tsx
+++ b/src/bin/BinSettings.tsx
@@ -183,7 +183,8 @@ export default function BinSettings(props: Props) {
   const [inMoistureString, setInMoistureString] = useState("0");
   const [tMoistureString, setTMoistureString] = useState("0");
   const [moistureTargetDeviation, setMoistureTargetDeviation] = useState("0");
-  const [autoFillThreshold, setAutoFillThreshold] = useState(0);
+  const [autoFillThreshold, setAutoFillThreshold] = useState(5);
+  const [lidarDropDistance, setLidarDropDistance] = useState(0);
   const [validInitial, setValidInitial] = useState(true);
   const [validTarget, setValidTarget] = useState(true);
   const [validDeviation, setValidDeviation] = useState(true);
@@ -217,7 +218,7 @@ export default function BinSettings(props: Props) {
           : {
               ...{
                 specs: pond.BinSpecs.create({ shape: pond.BinShape.BIN_SHAPE_FLAT_BOTTOM }),
-                inventory: pond.BinInventory.create({ grainBushels: 0, targetTemperature: 15 }),
+                inventory: pond.BinInventory.create({ grainBushels: 0, targetTemperature: 15, autoThreshold: 5 }),
                 highTemp: 20,
                 lowTemp: 10
               }
@@ -315,7 +316,12 @@ export default function BinSettings(props: Props) {
       setInMoistureString(initForm.inventory?.initialMoisture.toString() ?? "0");
       setTMoistureString(initForm.inventory?.targetMoisture.toString() ?? "0");
       setMoistureTargetDeviation(initForm.inventory?.moistureTargetDeviation.toString() ?? "0");
-      setAutoFillThreshold(initForm.inventory?.autoThreshold ?? 0)
+      setAutoFillThreshold(initForm.inventory?.autoThreshold ?? 5)
+      let dropDistance = initForm.inventory?.lidarDropCm ?? 0
+      if(getDistanceUnit() === pond.DistanceUnit.DISTANCE_UNIT_FEET){
+        dropDistance = Math.round((dropDistance/30.48)*100)/100
+      }
+      setLidarDropDistance(dropDistance)
       setActiveStep(0);
       if (bin) {
         setAutoTopNode(bin.settings.autoGrainNode);
@@ -437,6 +443,7 @@ export default function BinSettings(props: Props) {
     if (form.inventory) {
       form.inventory.inventoryControl = inventoryControl
       form.inventory.autoThreshold = autoFillThreshold
+      form.inventory.lidarDropCm = getDistanceUnit() === pond.DistanceUnit.DISTANCE_UNIT_FEET ? lidarDropDistance * 30.48 : lidarDropDistance
     }
 
     binAPI
@@ -484,6 +491,8 @@ export default function BinSettings(props: Props) {
         if (form.inventory) {
           form.inventory.inventoryControl = inventoryControl
           form.inventory.autoThreshold = autoFillThreshold
+          //if the users preferences are in feet convert the distance to cm otherwise it was entered as cm so use that
+          form.inventory.lidarDropCm = getDistanceUnit() === pond.DistanceUnit.DISTANCE_UNIT_FEET ? lidarDropDistance * 30.48 : lidarDropDistance
         }
         console.log(form)
         binAPI
@@ -947,6 +956,25 @@ export default function BinSettings(props: Props) {
                   setAutoFillThreshold(+e.target.value)
                 }}
               />
+              <TextField 
+                sx={{marginTop: 4}}
+                fullWidth
+                variant="outlined"
+                label="Drop Distance"
+                helperText="The distance between the lidar and the peak"
+                type="number"
+                InputProps={{
+                  endAdornment: (
+                    <InputAdornment position="end">
+                      {getDistanceUnit() === pond.DistanceUnit.DISTANCE_UNIT_FEET ? "ft" : "cm"}
+                    </InputAdornment>
+                  )
+                }}
+                value={lidarDropDistance}
+                onChange={e => {
+                  setLidarDropDistance(+e.target.value)
+                }}
+              />
             </Box>
           }
           {inventoryControl === pond.BinInventoryControl.BIN_INVENTORY_CONTROL_LIBRACART &&
diff --git a/src/grain/GrainDescriber.ts b/src/grain/GrainDescriber.ts
index 3c5bceb..5698cb7 100644
--- a/src/grain/GrainDescriber.ts
+++ b/src/grain/GrainDescriber.ts
@@ -139,7 +139,7 @@ export const GrainExtensions: Map<pond.Grain, GrainExtension> = new Map([
   [
     pond.Grain.GRAIN_CORN,
     {
-      name: "Corn",
+      name: "Corn (Henderson)",
       group: "Corn",
       equation: Equation.henderson,
       a: 0.000066612,
@@ -153,6 +153,40 @@ export const GrainExtensions: Map<pond.Grain, GrainExtension> = new Map([
       bushelsPerTonne: 39.368
     }
   ],
+  [
+    pond.Grain.GRAIN_CORN_B,
+    {
+      name: "Corn (Chung-Pfost)",
+      group: "Corn",
+      equation: Equation.chungPfost,
+      a: 374.34,
+      b: 0.18662,
+      c: 31.696,
+      setTempC: 38.0,
+      targetMC: 15.6,
+      img: CornImg,
+      colour: "#ffef62",
+      weightConversionKg: 25.4014333665971,
+      bushelsPerTonne: 39.368
+    }
+  ],
+  [
+    pond.Grain.GRAIN_CORN_C,
+    {
+      name: "Corn (Oswin)",
+      group: "Corn",
+      equation: Equation.oswin,
+      a: 15.303,
+      b: -0.10164,
+      c: 3.0358,
+      setTempC: 38.0,
+      targetMC: 15.6,
+      img: CornImg,
+      colour: "#ffef62",
+      weightConversionKg: 25.4014333665971,
+      bushelsPerTonne: 39.368
+    }
+  ],
   [
     pond.Grain.GRAIN_MAIZE_WHITE,
     {
@@ -190,7 +224,7 @@ export const GrainExtensions: Map<pond.Grain, GrainExtension> = new Map([
   [
     pond.Grain.GRAIN_OATS,
     {
-      name: "Oats a",
+      name: "Oats (Henderson)",
       group: "Oats",
       equation: Equation.henderson,
       a: 0.000085511,
@@ -207,7 +241,7 @@ export const GrainExtensions: Map<pond.Grain, GrainExtension> = new Map([
     [
     pond.Grain.GRAIN_OATS_B,
     {
-      name: "Oats b",
+      name: "Oats (Chung-Pfost)",
       group: "Oats",
       equation: Equation.chungPfost,
       a: 442.85,
@@ -224,7 +258,7 @@ export const GrainExtensions: Map<pond.Grain, GrainExtension> = new Map([
     [
     pond.Grain.GRAIN_OATS_C,
     {
-      name: "Oats c",
+      name: "Oats (Oswin)",
       group: "Oats",
       equation: Equation.oswin,
       a: 12.412,
@@ -543,7 +577,7 @@ export const GrainExtensions: Map<pond.Grain, GrainExtension> = new Map([
   ],[
     pond.Grain.GRAIN_RYE_A,
     {
-      name: "Rye a",
+      name: "Rye (Henderson)",
       group: "Rye",
       equation: Equation.henderson,
       a: 0.00006343,
@@ -558,7 +592,7 @@ export const GrainExtensions: Map<pond.Grain, GrainExtension> = new Map([
   ],[
         pond.Grain.GRAIN_RYE_B,
     {
-      name: "Rye b",
+      name: "Rye (Chung-Pfost)",
       group: "Rye",
       equation: Equation.chungPfost,
       a: 461.0230,
@@ -573,7 +607,7 @@ export const GrainExtensions: Map<pond.Grain, GrainExtension> = new Map([
   ],[
         pond.Grain.GRAIN_RYE_C,
     {
-      name: "Rye c",
+      name: "Rye (Halsey)",
       group: "Rye",
       equation: Equation.halsey,
       a: 4.2970,
@@ -588,7 +622,7 @@ export const GrainExtensions: Map<pond.Grain, GrainExtension> = new Map([
   ],[
         pond.Grain.GRAIN_RYE_D,
     {
-      name: "Rye d",
+      name: "Rye (Oswin)",
       group: "Rye",
       equation: Equation.oswin,
       a: 11.8870,
diff --git a/src/interactions/InteractionSettings.tsx b/src/interactions/InteractionSettings.tsx
index 40b9132..2519669 100644
--- a/src/interactions/InteractionSettings.tsx
+++ b/src/interactions/InteractionSettings.tsx
@@ -957,29 +957,16 @@ export default function InteractionSettings(props: Props) {
             </TextField>
           </Grid>
           <Grid size={{ xs: 2, sm: 1 }}>
-            {index === 0 ? (
-              <Tooltip title="Add another condition">
-                <IconButton
-                  color="primary"
-                  disabled={numConditions > 1 || !canEdit}
-                  aria-label="Add another condition"
-                  onClick={addCondition}
-                  className={classNames(classes.greenButton, classes.noPadding)}>
-                  <AddIcon />
-                </IconButton>
-              </Tooltip>
-            ) : (
-              <Tooltip title="Remove this condition">
-                <IconButton
-                  color="default"
-                  disabled={!canEdit}
-                  aria-label="Remove condition"
-                  onClick={() => removeCondition(index)}
-                  className={classNames(classes.redButton, classes.noPadding)}>
-                  <RemoveIcon />
-                </IconButton>
-              </Tooltip>
-            )}
+            <Tooltip title="Remove this condition">
+              <IconButton
+                color="default"
+                disabled={numConditions === 1 ||!canEdit}
+                aria-label="Remove condition"
+                onClick={() => removeCondition(index)}
+                className={classNames(classes.redButton, classes.noPadding)}>
+                <RemoveIcon />
+              </IconButton>
+            </Tooltip>
           </Grid>
         </Grid>
         {multiNodeSource() && !sensor && (
@@ -1076,6 +1063,16 @@ export default function InteractionSettings(props: Props) {
         ) : (
           <FormHelperText>You must select a source before adding conditions</FormHelperText>
         )}
+        <Tooltip title="Add another condition">
+          <IconButton
+            color="primary"
+            disabled={numConditions >= device.maxConditions() || !canEdit}
+            aria-label="Add another condition"
+            onClick={addCondition}
+            className={classNames(classes.greenButton, classes.noPadding)}>
+            <AddIcon />
+          </IconButton>
+        </Tooltip>
       </FormControl>
     );
   };
diff --git a/src/models/Device.ts b/src/models/Device.ts
index 115f199..6ee074d 100644
--- a/src/models/Device.ts
+++ b/src/models/Device.ts
@@ -169,6 +169,18 @@ export class Device {
     }
   }
 
+  public maxConditions(): number {
+    let max = 2
+    switch (this.settings.platform) {
+      case pond.DevicePlatform.DEVICE_PLATFORM_V2_CELLULAR_BLACK:
+      case pond.DevicePlatform.DEVICE_PLATFORM_V2_WIFI_BLUE:
+      case pond.DevicePlatform.DEVICE_PLATFORM_V2_CELLULAR_BLUE:
+      case pond.DevicePlatform.DEVICE_PLATFORM_V2_ETHERNET_BLUE:
+        max = this.status.firmwareVersion >= "2.1.9" ? 4 : 2;
+    }
+    return max
+  }
+
   public featureSupported(feature: string): boolean {
     let versions = featureVersions.get(feature);
     if (!versions) {