This happens to me; bumping into the brake pedal while I'm coming off of the accelerator. Only happens when I'm wearing dress shoes which have a wider sole. I find it a little annoying, but I got used to it. I'm a leggy 6'2" with size 11.5 so it probably also has something to do with angle of foot to pedal as even with the seat all the way back my legs have to be bent and my foot ends up angled to the right instead of going straight on.