HELP!!!! I switched my 1963 Chevrolet truck to disc brakes with a power booster and a dual master cylinder. I bleed the brakes, repeated no air for sure. I can drive the truck throught town, stop at all the light, go shopping etc. everything great next day I drive 4-5 miles and the brakes lock up. A mechanic friend of mine said the rod coming out of the booster was not allowing the pressure to release on the brakes. We took the master cylinder loose from the booster and the truck started moving. This booster and master cylinder came as a set for Master Brakes> why would it work so good one day and lock up the next? do I need to adjust the pedal under the dash, or work at the booster. PLEASE help a locked up brain...
