I have recently purchased a 2003 Rockwood 2270 that has 7" electric brakes with a 3500lb axle. The brakes do not seem to be effective at all even after adjusting them (they were totally out of adjustment) and cranking up my controller to max setting (Prodigy P2) the rig still moves from a dead stop at idle to about 5 mph - w/o trailer brake goes to about 10 mph. Considering the age of the brakes I am going to replace the assemblies but shouldn't this PUP have 10" brakes on it? I have also upgraded tires/rims to 13" so there is plenty of wheel clearance for 10" drums. Anybody have this axle/brake size combination?