I've recently upgraded to a 5bolt/4whl disc set up and I'm having problems with the front calipers holding pressure and dragging the front brakes. After the car sits for awhile, everything releases but starts up again after a short drive. We used calipers/spindles/rotors from an 03 GT donor. We upgraded the M/C but didn't replace the booster. When the problem first surfaced, we upgraded the prop valve to a SSBC (A0730) and ran adjustments to both extremes...still dragging up front. Has anyone ever experienced this problem and if so, how did you solve it?
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