Surprise! I was working on the Impala again.
(not that I wanted to, I forced myself!)
Pulled master from booster and the rod might be pushing the master a slight bit upon tightening the bolts but if so, not too bad. Should there be slop there? No real easy way to measure it. I see no way to adjust that rod!!! It spins but that's all it does. It does not pull out more than 1/2".
I would love to crank this in a little for a test but don't see a way of doing so. ????
Other than that, I removed the small line that goes to the LF from a small 4 way junction block on the frame. Of course it twisted so I had to make a new one!!!
As near as I can tell, it was not plugged. I took the brake hose off and it's clear, can blow air thru both ways.
That's where I am at now. Might take if for a spin later. Not expecting anything got fixed though from today's debacle.
I still would like to pull the LF wheel cylinder apart and make sure it's good. After that I am out of ideas.