have a 1966 mustang , brake pedal sticks down after driving
have a 1966 mustang v8 289 with an aftermarket power brake system on it with a proportioning valve and front discs, rear drums, the pedal sticks down after driving and does not raise back up on its own. I have to pull it back up with my foot so does not apply the brakes by itself. I have adjusted the rod between the pedal and the booster and it makes no difference. I have added a helper spring to pull the pedal back up but sometimes that does not work.. any help would be appreciated.