Good morning, Dave;
One shop I can suggest is Camera Clinic out here in Latte Land, telephone 206-367-2440. Doug has been doing almost all of the work on my Minoltas for about three years now. His address is: Camera Clinic, 518 NE 165th Street, Seattle, Washington 98155.
I picked up my Vivitar 450/SLD with the Copal Square Vertical Focal Plane Shutter that Doug had done a CLA for just this afternoon. John Nikon F also has a lot of his work done here.
The Minolta 1.7/85 is worth repairing. I also like mine.