ok so i got the PB fenders from the xootr website. they work well, but i find that the rear fender interferes with the folding action. the fender curves back so far that, when folded, the flap wraps around the tire and hits the ground. anyone else notice this? any work-arounds? i'd prefer not to cut it up, but basically every time i fold, and the fender pushes into the ground, the nuts holding the fender to the silver stays pop off and i have to put them back on (very frustrating).