Should I resolder the ground lead to + side of cell 4 on the Neu pack then or resolder the entire pack? The wires are layed out the same way in each tap, ground going to the slot with the arrow on it and counting up voltage each one over.

The only difference it the neu pack reads + voltage and the MA and TRC packs read - voltage.

to note, the MA and TRC packs are as they came from the factory and have never had the shrink removed or been modified in any way.