I recently bought a old Opral approximately 10 inch frying pan from an estate sale for $20 dollars. It was dirty and assumed that the tinning was good and the dirt would just come away, however after cleaning there are two approximately 1mm spots where the copper is showing through the tin. I have done a brief search on chowhound for re-tinning location and seen the two/three major re-tinning locations. However, I was wondering if anyone knew of any places closer to my location. I am located in Michigan (Detroit Metro area to be exact). It appears Rocky Mountain is the closest but if anyone knows of a closer one that would be great.