To recap: After a short drive, the brakes drag, and the pedal gets hard. By cracking the fitting coming off the MC I can release the pressure and drive some more. All the hoses are good. So I took the MC off and apart. WOW, it was full of gunk. Now I hope I can get a kit from NAPA to replace the seals, one-way valve etc. They just closed so I have to wait till tomorrow. The plan is to get this one working again, find another (hint) and send it out to White Post for rebuilding, and swapum when I get it back. Anyone have a 55 master cylinder?? Regards, Frank in sunny Eugene