Ok, my brakes just don't seem to stop as good as they should. This is more of a sensitivity issue than the pedal travels low. I replaced the pads and it helped but I am thinking it maybe vacuum related. I cleaned the check valve out with brake clean but that didn't make a difference. I am going to get a vacuum reading from the plenum but I am not sure of what it should be. Would a missing cylinder make it have less boost/assist/vacuum from the plenum? Any info would be appreciated.