So...........stopped by the shop and ordered the MCCGDP board as well as replacement ribbon cables, then headed to the job.

Before I changed any wires around I double checked my voltage controller to controller, the cars are in phase without having moved any wires. Don't know what the hell is going on.

Boards should be here tomorrow, before changing them out I'll check the controllers for correct phasing. Around the lunch table we came to the conclusion that there is a building power problem.