Do you have 3 distinct arches on each foot? If not, your feet will not work correctly mechanically speaking. It will cause pain, particularly in you heels, because your foot will be overcompensating. Birkenstocks are the only orthotics I know of that support all three arches. I've done, magnets, custom orthotics, chiropracters, minerals. All have only given temporary relief. Hope you find relief.