I recommend Paul Ebel:

W230 Terrace St.
PO Box 86
Spring Valley, WI
(715) 778-4372

He is experienced, courteous, fast, reasonably priced and he warranties his work. I had him CLA my Mamiya-Sekor 105mmf3.5D (black) last fall, and it's better than new! He will be getting more of my business as soon as my other TLR lenses come due for CLAs.