To keep the pedal from moving away I glued some rubber shelf lining on the bottom. Pedal now stays in place. Second problem--not mine originally--read the suggestion to put a phone book or other book in front (or back-however you look at it)of the pedal. Rest your foot on the book and pedal and your foot will be level (straight) not on a slant with the pedal. It works--this may help with the foot pain.
prm