prodigy p3

Thanks everyone. The main reason I traded up to the p3 (other than I really just wanted one), was due to the fact that when we bought our 2010 model 33' Rockwood tt used last spring, I would go through the brake setup adjustment per my current proportional brake controller but never could get it setup right. It said the same thing the p3 instuctions say I believe. Which is to initially set the controller to a certain power, manually fully engage the brakes at 25 mph, and if the brakes lock, back off the setting. If not, increase the setting, and so forth. Anyway, my old 25' tt would lock the wheels just like the instructions stated. My Rockwood won't even at full power. I'm thinking l have tt brake issues.