I installed a Firebird master brake cylinder(1980) in my Samurai. It was a fairly painless experience with the exception of running back and forth a couple of times to the auto parts trying to convert the fittings from american to Metric. I have 4 wheel disk brakes on toyota axles with all toyota 4 cyl. calipers. I wanted to swap from the stock MC because I had to pump it to have effective pedal, but now that I made the swap my pedal is very,very stiff, and I practically have no stopping power. Even though I had quite a few lines apart during the swap it bleed out almost immediately. Anyone have any ideas of where to go with this to correct the problem I have?