Since no one answered my question, I'll answer it myself. It was bad seals in the old MC as suspected. When I removed the MC from the booster, fluid poured out (that shouldn't happen). The rearmost seal was so bad, it was letting fluid leak one way and air the other way. Installed new MC, finished bleeding the brakes, and drove it around. Everything worked great. I think I need an adjustable proportioning valve though.
Sunday, March 16th, 2008 AT 3:12 PM