[njsteve]

I had a weird problem with my survivor 73 Firebird. It sat for 41 years with the original brake fluid which ate up the inside of the master cylinder bore. I sent the master cyl out to White Post and they sleeved it. When I reinstalled it, the pedal would slowly bleed down to half way and then would be firm. Very weird. I swapped out the sleeved master with a known good one and the same thing would happen. Turns out it was the rear wheel cylinders which had corroded internally and would engage, but would not pull back once engaged due to crud in the bores. Once I swapped them out, all was well.