Sorry for the confusion, but I have tried the KI power supply with the new harness in the z back. I have also tried a different power supply (same type as the original z back style p/s), with the original z back harness and the new slaved in jamma harness. The KI power supply is a switcher. The z back has the original style, which I swapped out with a spare of the same type to see if that made a difference.
I have not swapped out any of the a/c items, how does that affect the guns tracking? -asking because I truly don't know.