The Stovebolt Site Forums The Shop Area Driveline 1st suspect master cylinder?

I jacked up the truck today and adjusted the star wheels 'til they were tight, I couldn't spin the tires. The rear brakes have two star wheels and two wheel cylinders, adjusted both. I put the truck back on the ground and moved it back and forth a couple of feet, brakes were almost locked to the point of not able to move it at an idle. No change in the brake pedal, slow easy push of the pedal and it goes to the floor, several fast hard pushes and it builds pressure and stays firm and high. I think my next move is remove the master and rebuild it.