[rverdlm]

Going back to what I said about the engineering dept from Prodigy. They said that both the controlers and the brake pumps are constantly being upgraded/improved and that any controller that has a feedback loop is a potential problem. I do agree that these brake don't need to be setup for near lockup. That is no doubt to much brake, especially with 6 of them. One thing I would try is to manually apply the trailer brakes and see if they respond smoothly. That would tend to eliminate the brakes themselves. With six disc brakes they should be able to smoothly stop the whole shebang!