try a -+ set up. adjust the rear foot to neg angle. its all about experimenting. take a portable screw driver with you so you can adjust on the go.
rear quad or hamstring, is the muscle for bending knees (hamstring curls), are you doing a lot of lifting the rear board up and down when switching edges?
also what about your stance? too wide? too narrow? since you have both binding at positive angles I would imagine you are using a lot of hamstring on toe edge?
Last edited by speedjason; 12-31-2013 at 09:42 AM.