[SWeeks]

Rick, Here's my setup: Front= Masterpower 12" rotors with dual piston aluminum (corvette) PBR calipers. Rear = 95 Cobra 11.75" rotors and single piston calipers. 3/16" brake lines, adjustable proportioning valve. Mustang II booster, Don's new pedal, and the master cylinder, from MPbrakes, is a GM (corvette?) that they recommended. I previously had a Napa corvette master cylinder that Don had recommended, I changed it when I changed out the 9" front to the 12". I have not had the time to check the booster as you described. I do recall that there didn't seem to be very much pressure at the rear when I bled them, sometime last year. Also, adjusting the proportioning valve fully either way, doesn't seem to make any difference. Two thoughts that I have considered, one, MPbrakes recommends the use of a metering valve, (even with four wheel disc), and two, Trying a different booster and pedal assembly from another car (other than the mustang II). My brakes will stop the car, but they are NOT high performance brakes as you would expect from this setup. Thanks for your time and any knowledge that you can share with us CR owners that want HIGH PERFOMANCE BRAKES.

Shane