I can't say I have near the experience doing brake jobs as Jim, or Vikki, but I can say I've had difficulty with a few. I've learned over the years that once you get to the point you are at, start over. Start with the very basic, examine all 4 Drums and ensure they are seated and adjusted properly (there should be a very slight drag). Examine the wheel cylinders and verify they have no fluid leaks, and that the bleeder screws are free from debries. Check all hoses for structural integrity, and for leaks. If all check good, then it must be the MC. I know you replaced it already. Did you buy a rebuilt or new one? Spend the money on the new one, I've had too many problems with rebuilt ones, and the money spent is well worth the time saved. As Vikki said, verify you are getting the correct MC from the parts store. I know your pain, I had a Ford Dealership spend 3 days, and over $1000 in parts trying to diagnose a problem with my wifes 95 Cobra Mustang. After 3 days, the mechanic decided to start at the beginning, and replace the plugs. Turns out the plugs were bad, and he assumed they were good since they were recently replaced. Glad it was under warranty. Hope this helps.
