I realize this may have to be posted somewhere else but did not see a brake section. I have completed the 4 wheel disk conversion on a 1959 Fairlane Skyliner. Willowood front , ( Front Brake Kit Part No.: 140-13653 and Inline tube rear with large spin out caliper single piston . SKU: FDBK9XB ) 22 inches vac, 1979 Corvette style master cyl. 1 1/8 inch bore., 8 inch dual diaphragm power booster, new 3/16 nickle lines, pressure bled system after installing everything and bench bleeding master. I have hard pedal about 1.5 inches from floor, car will not panic stop or hard stop for that matter, definitely would not drive. No proportioning valve. Any ideas?