From what I can tell the two tallest contactors work as they should nothing cycles or untrips until the PMT. On a side note. I just jacked up the trucks front wheels and everything works as it should with no load or the wheels jacked up. No issues in reverse or forward. It will only PMT is you quickly floor it in reverse or forward. If you just creep it to start the wheels then floor it it goes as it should or are linear with the pedal movements. Load it the common factor? What part of the unit measures load on the wheels?