The controller is on B3, and when I went 25 mph and put on the lever at 6amps or volts (not sure) it did NOTHING so turned up the controller to the highest and still does very little. He told me to take a trip and then bring back for the brakes to be adjusted. I went 450 miles roundtrip and on highway I had a HUGE space between us and the one in front of us due to the brakes. I feel the truck brakes are doing 99% of the work. Surely hope that the adjustment of brakes will work. I have had a Prodigy before and LOVED it so I think it is the brakes not the controller. I did blow out my brake line last year so could they have done something on my truck that would affect the electric of the controller and rig brakes? I surely agree that the brakes should have been adjusted BEFORE I took the fiver out of there !!!!