Index: firmware/App/Controllers/LoadCell.c
===================================================================
diff -u -r25770b4b27e75e730d89ac046f7db405b1bfe39f -rc20d71064bad67c2db392c6383bb410e8a7dfa2a
--- firmware/App/Controllers/LoadCell.c	(.../LoadCell.c)	(revision 25770b4b27e75e730d89ac046f7db405b1bfe39f)
+++ firmware/App/Controllers/LoadCell.c	(.../LoadCell.c)	(revision c20d71064bad67c2db392c6383bb410e8a7dfa2a)
@@ -90,7 +90,7 @@
     U32 ii;
 
     // update sums for load cell average calculations
-    loadcells[ LOAD_CELL_RESERVOIR_2_PRIMARY ].measuredReadingSum += getFPGALoadCellA1();
+    loadcells[ LOAD_CELL_RESERVOIR_1_PRIMARY ].measuredReadingSum += getFPGALoadCellA1();
     loadcells[ LOAD_CELL_RESERVOIR_1_BACKUP ].measuredReadingSum += getFPGALoadCellA2();
     loadcells[ LOAD_CELL_RESERVOIR_2_PRIMARY ].measuredReadingSum += getFPGALoadCellB1();
     loadcells[ LOAD_CELL_RESERVOIR_2_BACKUP ].measuredReadingSum += getFPGALoadCellB2();