It was a kit from JPL in Aliquippa, Pa. The residual valves are Willwood. Not sure about the master and booster. They put the parts together when we bought our TCI mustang II kit. The prop valve has a rubber cap on what I believe is an adjustment screw on the back of it. Haven't tried to adjust the prop valve though. No matter what method we try, we can't seem to get a hard pedal. Even went out and bought some of those speed bleeder valves. I think we may just pull the master cylinder off, and bench bleed it again and start over from the beginning.
