Have you seen a good sports minded PT? Often they are just as good, if not better, at diagnosing and treating foot issues than a podiatrist. As a coach, I find that most of my athletes that go to a podiatrist end up in orthotics that are not really needed (and actually cause other injuries, imbalances or compensations). If you want some recommendations on PT practices, please PM me.
Hope you can get your issues resolved!