Stanton- I verified the adjustment was correct. you can look into the master to see that there is no piston movement in the master as I pushed it onto the booster.
as for fully retracted, I guess I didn't check that, but my brake light switch is a stop and it doesn't go out further than that. and my brake lights are not on, so it must be coming up to them.


DSG-I had wondered if there was another failure mode for a master cylinder. I have only experienced the fluid bleed by the piston, where you have no pedal. or it slowly falls.