Intermittent Brake Bind/Drag

Hi Ron-I have finally found the problem to be the master cylinder. I have the replacement from Alpha Aviation SMK-88F. Any advice on getting the floor boards up and removing the master cylinder.
Thanks, Dennis

Make sure the guide pins on the calipers are not binding or worn

If both brakes are sticking, it is probably a sticky master cylinder. If the plane pulls one way or the other when the brake sticks, it is probably a caliper problem. My master cylinder was not releasing the pressure without pulling the pedal up. A dismantling, cleaning, and new o-rings, seemed to fix the problem.

0n my 415C with cleveland brakes, I have experienced a brake sticking / dragging and then subsequent release after operating the brake pedal again.
Should I start with looking at the wheel hydraulics or the brake pedal & master cylinder under the floor?
Thanks for your advice,
Dennis Tar