Index: firmware/App/Controllers/DGInterface.c
===================================================================
diff -u -r6419179374edcd65da462de84e8aeaefb7e20320 -r7bbf1fb04f7e4788c3072ca173413ed052c608d3
--- firmware/App/Controllers/DGInterface.c	(.../DGInterface.c)	(revision 6419179374edcd65da462de84e8aeaefb7e20320)
+++ firmware/App/Controllers/DGInterface.c	(.../DGInterface.c)	(revision 7bbf1fb04f7e4788c3072ca173413ed052c608d3)
@@ -16,13 +16,14 @@
 ***************************************************************************/
 
 #include "DialInFlow.h"
+#include "Dialysis.h"
 #include "DGDefs.h"
+#include "DGInterface.h"
 #include "ModeInitPOST.h"
 #include "ModeTreatment.h"
 #include "OperationModes.h"
 #include "SystemCommMessages.h"
 #include "Timers.h"
-#include "DGInterface.h"
 
 /**
  *  @addtogroup DGInterface
@@ -670,7 +671,7 @@
     loadCellWeightInGrams[ LOAD_CELL_RESERVOIR_2_PRIMARY ].data = res2Primary;
     loadCellWeightInGrams[ LOAD_CELL_RESERVOIR_2_BACKUP ].data = res2Backup;
 
-    // feed new weight samples into filters and update moving averages
+    // Feed new weight samples into filters and update moving averages
     for ( res = DG_RESERVOIR_1; res < NUM_OF_DG_RESERVOIRS; res++ )
     {
         F32  wt = ( res == DG_RESERVOIR_1 ? res1Primary : res2Primary );
@@ -680,6 +681,9 @@
         lgFilteredReservoirWeightInGrams[ res ] = lgLoadCellReadingsTotal[ res ] / (F32)SIZE_OF_LARGE_LOAD_CELL_AVG;
     }
     lgLoadCellReadingsIdx = INC_WRAP( lgLoadCellReadingsIdx, 0, SIZE_OF_LARGE_LOAD_CELL_AVG - 1 );
+
+    // Update Dialysis sub-mode with new reservoir volumes
+    updateReservoirVolumes( res1Primary, res2Primary );
 }
 
 /*********************************************************************//**
Index: firmware/App/Controllers/PresOccl.c
===================================================================
diff -u -r3533955f242cec0505e8826e0e2d96f7b79ad499 -r7bbf1fb04f7e4788c3072ca173413ed052c608d3
--- firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision 3533955f242cec0505e8826e0e2d96f7b79ad499)
+++ firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision 7bbf1fb04f7e4788c3072ca173413ed052c608d3)
@@ -663,7 +663,8 @@
  * @return none
  *************************************************************************/
 void execPresOcclTest( void )
-{
+{
+#ifndef DISABLE_PRESSURE_CHECKS
     U32 const bpPressure = getMeasuredBloodPumpOcclusion();
     U32 const dialysateInPressure = getMeasuredDialInPumpOcclusion();
     U32 const dialysateOutPressure = getMeasuredDialOutPumpOcclusion();
@@ -694,6 +695,7 @@
     {
         SET_ALARM_WITH_1_U32_DATA( ALARM_ID_HD_VENOUS_PRESSURE_SELF_TEST_FAILURE, venousPressure );
     }
+#endif
 }
 
 /*********************************************************************//**
Index: firmware/App/Modes/Dialysis.c
===================================================================
diff -u -rc08182ef9b9ae04e8d3a0aae96c015ce0f7a2fa5 -r7bbf1fb04f7e4788c3072ca173413ed052c608d3
--- firmware/App/Modes/Dialysis.c	(.../Dialysis.c)	(revision c08182ef9b9ae04e8d3a0aae96c015ce0f7a2fa5)
+++ firmware/App/Modes/Dialysis.c	(.../Dialysis.c)	(revision 7bbf1fb04f7e4788c3072ca173413ed052c608d3)
@@ -62,6 +62,8 @@
 static F32 measUFVolume;                                ///< Current total measured volume for ultrafiltration (Where are we w/r/t ultrafiltration).
 static F32 resStartVolume[ NUM_OF_DG_RESERVOIRS ];      ///< Reservoir start volume for ultrafiltration (i.e. where did we start with each reservoir).
 static F32 resFinalVolume[ NUM_OF_DG_RESERVOIRS ];      ///< Reservoir final volume for ultrafiltration (i.e. where did we end after switch with each reservoir).
+static F32 resCurrVolume[ NUM_OF_DG_RESERVOIRS ];       ///< Reservoir current volume.
+static F32 resLastVolume[ NUM_OF_DG_RESERVOIRS ];       ///< Reservoir previous volume.
 static F32 measUFVolumeFromPriorReservoirs;             ///< Current total ultrafiltration volume from previous reservoirs in current treatment.
 
 static U32 uFTimeMS;                                    ///< Current elapsed ultrafiltration time (in ms).  Used for calculating UF reference volume.
@@ -1068,7 +1070,7 @@
     LOAD_CELL_ID_T loadCell = ( activeRes == DG_RESERVOIR_1 ? LOAD_CELL_RESERVOIR_1_PRIMARY : LOAD_CELL_RESERVOIR_2_PRIMARY );
     F32 latestResVolume = getLoadCellWeight( loadCell );
 #ifndef DISABLE_UF_ALARMS
-    F32 deltaVolume = latestResVolume - resFinalVolume[ activeRes ];
+    F32 deltaVolume = latestResVolume - resLastVolume[ activeRes ];
 
     // ensure volume change is not too excessive - indication that load cell was impacted by some kind of shock
     if ( fabs(deltaVolume) > MAX_ACTIVE_LOAD_CELL_CHANGE_G )
@@ -1142,4 +1144,22 @@
     measUFVolumeFromPriorReservoirs += ( resFinalVolume[ inactiveRes ] - resStartVolume[ inactiveRes ] );
 }
 
+/*********************************************************************//**
+ * @brief
+ * The updateReservoirVolumes function updates the reservoir volumes based
+ * on new load cell readings.
+ * @details Inputs: none
+ * @details Outputs: resCurrVolume[], resLastVolume[]
+ * @param res1Vol new volume for reservoir 1
+ * @param res2Vol new volume for reservoir 2
+ * @return none
+ *************************************************************************/
+void updateReservoirVolumes( F32 res1Vol, F32 res2Vol )
+{
+    resLastVolume[ DG_RESERVOIR_1 ] = resCurrVolume[ DG_RESERVOIR_1 ];
+    resLastVolume[ DG_RESERVOIR_2 ] = resCurrVolume[ DG_RESERVOIR_2 ];
+    resCurrVolume[ DG_RESERVOIR_1 ] = res1Vol;
+    resCurrVolume[ DG_RESERVOIR_2 ] = res2Vol;
+}
+
 /**@}*/
Index: firmware/App/Modes/Dialysis.h
===================================================================
diff -u -rbb80dbac26147ab08413efa91007f7ffed43c38f -r7bbf1fb04f7e4788c3072ca173413ed052c608d3
--- firmware/App/Modes/Dialysis.h	(.../Dialysis.h)	(revision bb80dbac26147ab08413efa91007f7ffed43c38f)
+++ firmware/App/Modes/Dialysis.h	(.../Dialysis.h)	(revision 7bbf1fb04f7e4788c3072ca173413ed052c608d3)
@@ -73,6 +73,7 @@
 void setStartReservoirVolume( DG_RESERVOIR_ID_T reservoirID );
 void signalReservoirsSwitched( void );
 void setFinalReservoirVolume( void );
+void updateReservoirVolumes( F32 res1Vol, F32 res2Vol );
 
 /**@}*/