Thanks for the suggestion: I have never seen the tubing with a check valve, but I did find bleeder valves for the wheel cylinders that have a spring loaded check valve in them. They seem to work well. I could not find them for the booster, because it takes a bigger valve. I think the problem is in the booster. I don't think I am getting the air out of it. If my pedal goes away this time, I am going to take it to an old shop that I think has a pressure bleeder, and see if he can make it work. If that fails, I am going to do away with the booster. I'm not going to haul anything heavy, and plain old brakes will be fine. Allen
