Find a small place, frequently places like NAPA have a machine shop in back. You most likely will not have any luck at chain stores like Checker, Pep Boys, etc.
Look for a small automotive machine shop - avoid engine rebuilders (automotive) because they are usually set up for production work
Check with a couple of local bike shops especially independent stores and see who they use.
Send it to Raceway Services in Salem Oregon (number on our dealer list)
As a last resort go to a Harley shop - Not because they are bad ( as a rule they are pretty good), but because they are usually way expensive.
Totally last resort, ship it to us and con us into taking it to a rebuilder. (Not your cheapest or even probably your best choice)