I was coming home yesterday, and went to stop for a light. When trying to leave the light, the car had to fight itself (and hard) to keep moving. I slowly got it off a main street and checked it out. Only the rears had locked. they were glowing red. Fronts looked fine. Walked home, and went back this morning... to my suprise, i could roll it, so i drove it home. ABS has been removed, and there is a wilwood proportioning valve, but that should not cause the discs to act like reverse linelock. The parking brake is another issue i have looked into, but don't believe was the cause of the problem, as it happened when pushing the pedal at the light. WTF ?

new prop valve fixed it.