Hopefully the Birks will help you...they helped me and it turns out that I wasn't even fit for them properly. I am now awaiting my new pair to arrive via Fedex....a pair that with a high enough arch to actually support the darn thing. With the Birks and anti-inflammatories and occasional icing, I've made progress. The turning point for me was when I recently became committed to losing weight. I had to be in a lot of pain to tackle dieting after years of ignoring the scale.
Anyway...hope the Birks help - it's nice to have you on board.