'53 3100, new wheel cylinders, new brake shoes, new flex lines and slightly used original type MC from a fellow bolter here. I didn't tear down the MC because he said he put very few miles on it before wrecking his truck.
After I adjusted the brakes and bled the system I had a nice firm pedal. When I drove the truck last fall it only took a few miles I noticed more drag. By the time I got home the front wheels were very hot. I tried loosening the adjusters each time I drove and they still tightened up. I finally pulled the drums and saw the wheel cylinders were not retracted all the way.
Is the MC not working properly?