Dose anyone know the thread size pitch on outlet side of the master cylinder(mechanical e-brake). Having troubles with my brake pedal going to floor or close to the floor. Checked all slide pins, pads and rotors like new, no leaks, bled the brakes twice no joy. I am thinking master cylinder, I would like to isolate the master cylinder by plugging the outlets with a bolt or plug of some kind and test the pedal travel.