so I pulled it out this morning. It no longer seems to be unable to stop.
it still has a bit of the old problem where it doesn't stop soon enough, or lock up.

I took off the master cylinder to see if the rod had backed down but it was still adjusted.
pedal has more movement without the master bolted up, so no binding there, nor is it the booster.

have never seen it, but can a master be bad and not move farther? or is it only the bleed by, which I have seen in the past?

I will start tearing into the brakes again to see if they are binding up somewhere.

is there a torque spec for the slider bolts? I just cranked down till they stopped.
never been a problem before, but just wanted to make sure.