How is the movement when you move the E-brake lever, I wouldn't force the lever too much at all but if it will work a bit, repeated action may clear the crud in the action.
The faster you go the more momentum is you have, the brakes end up trying to do a reverse wheelie with all the weight (momentum) on the front and the stopping force compressing the front and lifting the back, with the back being lifted there is less traction.
I've been told that some people leave a bit of pressure on the brake pedal and this can cause some drag, maybe check how much pressure/travel the pedal uses to contact and look at a stronger return spring on the pedal so your foot resting on the pedal isn't causing drag.
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 Thanks Ironknot-Buggy 
Last edited by Ironknot-Buggy; 06-08-2012 at 11:52 PM.
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