diff --git a/src/snapred/backend/dao/ingredients/NormalizationIngredients.py b/src/snapred/backend/dao/ingredients/NormalizationIngredients.py
index 563776e4b..ba2bbcf65 100644
--- a/src/snapred/backend/dao/ingredients/NormalizationIngredients.py
+++ b/src/snapred/backend/dao/ingredients/NormalizationIngredients.py
@@ -4,6 +4,7 @@
 
 from snapred.backend.dao.GroupPeakList import GroupPeakList
 from snapred.backend.dao.state.CalibrantSample import CalibrantSample
+from snapred.backend.dao.state.InstrumentState import InstrumentState
 from snapred.backend.dao.state.PixelGroup import PixelGroup
 
 
@@ -13,3 +14,4 @@ class NormalizationIngredients(BaseModel):
     pixelGroup: PixelGroup
     calibrantSample: CalibrantSample
     detectorPeaks: List[GroupPeakList]
+    instrumentState: InstrumentState
diff --git a/src/snapred/backend/recipe/algorithm/RawVanadiumCorrectionAlgorithm.py b/src/snapred/backend/recipe/algorithm/RawVanadiumCorrectionAlgorithm.py
index 4f06996d7..ea4008cac 100644
--- a/src/snapred/backend/recipe/algorithm/RawVanadiumCorrectionAlgorithm.py
+++ b/src/snapred/backend/recipe/algorithm/RawVanadiumCorrectionAlgorithm.py
@@ -52,6 +52,8 @@ def chopIngredients(self, ingredients: Ingredients) -> None:
         self.geometry = ingredients.calibrantSample.geometry
         self.material = ingredients.calibrantSample.material
         self.sampleShape = self.geometry.shape
+        self.lambdaMin = ingredients.instrumentState.particleBounds.wavelength.minimum
+        self.lambdaMax = ingredients.instrumentState.particleBounds.wavelength.maximum
 
     def unbagGroceries(self) -> None:
         self.inputVanadiumWS = self.getPropertyValue("InputWorkspace")
@@ -83,6 +85,30 @@ def chopNeutronData(self, inputWS: str, outputWS: str) -> None:
             BinningMode="Logarithmic",
         )
 
+        # Malcolm added these lines ##################
+        self.mantidSnapper.ConvertUnits(
+            "Convert workspace to wavelength units",
+            InputWorkspace=outputWS,
+            Outputworkspace=outputWS,
+            Target="Wavelength",
+        )
+
+        self.mantidSnapper.CropWorkspace(
+            "crop all events outside of range",
+            InputWorkspace=outputWS,
+            Outputworkspace=outputWS,
+            XMin=self.lambdaMin,
+            XMax=self.lambdaMax,
+        )
+
+        self.mantidSnapper.ConvertUnits(
+            "Ensure workspace is in TOF units",
+            InputWorkspace=outputWS,
+            Outputworkspace=outputWS,
+            Target="TOF",
+        )
+        ################################
+
         self.mantidSnapper.MakeDirtyDish(
             "make a copy of data after chop",
             InputWorkspace=outputWS,
diff --git a/src/snapred/backend/service/SousChef.py b/src/snapred/backend/service/SousChef.py
index a0f5714e1..2d232d336 100644
--- a/src/snapred/backend/service/SousChef.py
+++ b/src/snapred/backend/service/SousChef.py
@@ -302,6 +302,7 @@ def prepNormalizationIngredients(self, ingredients: FarmFreshIngredients) -> Nor
             pixelGroup=self.prepPixelGroup(ingredients),
             calibrantSample=self.prepCalibrantSample(ingredients.calibrantSamplePath),
             detectorPeaks=self.prepDetectorPeaks(ingredients, purgePeaks=False),
+            instrumentState=self.prepInstrumentState(ingredients),
         )
 
     def prepDiffractionCalibrationIngredients(
diff --git a/src/snapred/resources/application.yml b/src/snapred/resources/application.yml
index 9f63239a0..4e7670c0e 100644
--- a/src/snapred/resources/application.yml
+++ b/src/snapred/resources/application.yml
@@ -12,7 +12,7 @@ instrument:
   name: SNAP
   home: ${IPTS.root}/SNAP
   calibration:
-    home: ${instrument.home}/shared/Calibration
+    home: ${instrument.home}/shared/Calibration_testing
     sample:
       home: ${instrument.calibration.home}/CalibrantSamples
       extensions:
@@ -215,11 +215,11 @@ constants:
     tofMax: 14500
     rebinParams: [2000, -0.001, 14500]
   CropFactors:
-    lowWavelengthCrop: 0.05
-    lowdSpacingCrop: 0.1
-    highdSpacingCrop: 0.15
+    lowWavelengthCrop: -0.04
+    lowdSpacingCrop: 0.015
+    highdSpacingCrop: 0.022
   CrystallographicInfo:
-    crystalDMin: 0.4
+    crystalDMin: 0.7
     crystalDMax: 100.0
   DetectorPeakPredictor:
     fwhm: 1.17741002252 # used to convert gaussian to fwhm (2 * log_e(2))
@@ -227,7 +227,7 @@ constants:
     toggleCompressionTolerance: false  # false = no tolerance compression, true = tolerance compression
     # tolerance: -0.004                 # tolerance override for calculated compression
   GroupDiffractionCalibration:
-    MaxChiSq: 100
+    MaxChiSq: 10000
   RawVanadiumCorrection:
     numberOfSlices: 10
     numberOfAnnuli: 10