Index: firmware/App/Controllers/DGInterface.c
===================================================================
diff -u -r7cf04dc00d1242aba62f3cd4e4bcb19f1e83ebc6 -r4f026c2e983dcb657a5c980f3572c812b9782ae6
--- firmware/App/Controllers/DGInterface.c	(.../DGInterface.c)	(revision 7cf04dc00d1242aba62f3cd4e4bcb19f1e83ebc6)
+++ firmware/App/Controllers/DGInterface.c	(.../DGInterface.c)	(revision 4f026c2e983dcb657a5c980f3572c812b9782ae6)
@@ -519,7 +519,7 @@
         lgLoadCellReadingsTotal[ res ] += wt;
         lgFilteredReservoirWeightInGrams[ res ] = lgLoadCellReadingsTotal[ res ] / (F32)SIZE_OF_LARGE_LOAD_CELL_AVG;
 
-        wt = ( res == DG_RESERVOIR_1 ? res1Primary : res2Primary );
+        wt = ( res == DG_RESERVOIR_1 ? res1Backup : res2Backup );
         lgLoadCellBackupReadingsTotal[ res ] -= lgLoadCellBackupReadings[ res ][ lgLoadCellReadingsIdx ];
         lgLoadCellBackupReadings[ res ][ lgLoadCellReadingsIdx ] = wt;
         lgLoadCellBackupReadingsTotal[ res ] += wt;