Thanks for the reply. Here is where I am now. First, this is the second mc . the first one leaked out the back spool and ran down the booster. It had a check valve in both ends. If I understand correctly, being a disc/drum car, only the back one should have the check valve. Now the second one, also a WT code for the 67 camaro does not leak, but has no check valves on either end. Will call heartbeat tomorrow. I believe these were the only two WT code they had. I have attempted to gravity bleed, pump pedal, and vacuum bleed this car. The back bled well, I cannot get any fluid out the front, which are also $600 original/rebuilt calipers with the 2 piece rotors. What I have learned but don't understand is the round valve under the master cylinder, which is also new. The manual says to push the back of this valve to release while bleeding. Mine won't move, the rod only spins. I did notice the intake side was wet with fluid, and the output side was bone dry. I attempted to blow air through and went up to 100 psi in 10 psi graduates with the valve never letting any air through. The complete break system on this car is new or expensivly rebuilt. JUST DON'T WORK. Any advice will be appreciated. Pete One more thing, I backed off the adjustment rod inside the car from the booster to the pedal, I adjusted till I have appox 1/4" travel before moving spools in MC. Pete