I don't know any shops on the eastside. First though. What do you need done? Lots of people here do their own work and may be willing to help you out for a small fee and/or beer.
Shank. I've had those for 2seasons now. Seem solid to me. I had the Z up in them with no wheels for about 2 months. At $44 each I'm happy. I think they still carry them too. Sometimes they are red too.
Love my GP. Can't wait to play with it sum mo' here's one from the first day I gots it. http://www.youtube.com/watch?v=TyRNcdiv64I&feature=youtube_gdata