[Biff]

We have had problems with pwm cables before, especially last year with the current sensor. It was wired to keep the globe the drives our "fingers" from snapping it's sprockets and the 5/16" fiberglass rod that made up the fingers.
The connection would get noisy and finger movement became very intermittent and unpredictable. The fix for us was a can of ProGold G5 contact treatment. Sprayed on the free ends of cables and then gently run in and out of the sockets or pins a few times. This seemed to cure all of our PWM and current limiter issues. This year we will be treating all pwm cables before driving as a Standard op.
We will be at Buckeye and West Michigan if you need some I will lend you the use of a can. BTW if your on the west side of michigan you can get it at SF electroncs. Not cheap but good stuff.
Tom Cooper