I recently replaced rotors, pads, calipers, and all the soft brake lines on my 95 80 series after a front axle rebuild. Since the rebuild, I've noticed a slight dragging on the front brakes. When I back up, I have a slight squeal as well. After a short drive, I can barely touch the front rotor due to heat build up. In another thread, I read that the problem with dragging might be brake lines, calipers, MC, and booster. My brakes work fine, I don't see any leaking at the MC. How would I tell if the MC or booster is bad?