I have a SP3220-30 that has a seriously stiff plug right as the truck is coming to a stop in the forks trailing direction. Back in February, I swapped the drive motor with a sister unit and the problem mysteriously went away. I chalked it up to a weak motor. Now, 8 months later, the problem is back. There are no event codes, the unit doesn't blow fuses or stop working, just the stiff plug.

I have;
adjusted feature 5 and 16 with little to no change
swapped the drive motor again with a different unit (problem got better, but still there)
swapped the control card (just the EV100 card)
swapped the entire traction control pod
adjusted the potentiometer
added a static strap

This problem only occurs when changing direction from forks trailing to forks first, never in the other direction. The problem only occurs when I twist the throttle from full forward to full reverse. If I plug the truck and only twist the throttle 1/2 way, no issue.

Seems like a current limit issue, like a current overload at the end of the plug cycle. I've had these issues with RC3000's after replacing bad 4 recs and D contactors and still having a problem, that ended up being a bad drive motor (which is why I went to the motor again).

Tomorrow the plan is to swap the battery, cables, contactors and ???

This ain't no rookie-missed-something-obvious problem, come on you high level Crown techs, whattayagot?

Thanks in advance