@Qtonic
Mine seems to be fine after rebuild, what I did during uninstall was count the number of rotations when unscrewing clevis, then install onto new MC piston with the exact same distance.
While barbaric and leaves room for error if the 20+ y/o piston is any different than new, it seems...
Just to add to the "pump failure" portion, there are other options and currently you can get OEM for ~$800, (see below). Great pump failure thread at the bottom of my post, and here is my brief synopsis of linked thread;
I'm in the middle of repairing the ABS pump failure where you get the...