Check your regen contactor. fwd and reverse contactor for welding or binding contact plates. It's possible you have the brake pot and accel pot connectors crossed. Also check to see if you brake switch is stuck in on position. Never had one to do as described. Did you replace the brake pot with an accel pot?
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.