The brake pedal is not returning (can feel the car holding back plus the brakes lights were staying on). I suspect it has something to do with the booster, its a rebuilt unit and it doesnt seem to happen when the vacumn line to the booster is off. I was told I should be using a special hose from the vacumn port on the back of the intake to the booster port, had 3/8" fuel line there, could that be causing my sticking problem?