I just had my shop do a 4 speed conversion on my '67 bird. I brought them all correct and/or original parts. After I picked the car up, the brakes seized after 45 mintues of driving. I brought the car back to them after the brakes cooled off. I told them they probably had to back off on the brake pedal push rod adjustment a bit, since they replaced the brake pedal. They did that and cut the drums and sanded the linings. Now the problem is a very severe pedal. A slight touch of the pedal and you feel like you're going through the windshield. I have power all drum brakes. Any suggestions?