There is a periodic listing on craigslist for powder coating. I can't attest to the quality as I've never had this done, but it seems as if a meeting would be possible and you could ask to see the guys work. Just go to craigslist Philadelphia page, bikes, then search for "powder coating". The post is renewed every week or so. Good luck and post some feedback if you do use someone local to help others in the area that might be looking fo rthe same service.