Jason,
I've found Greg's Repair on Summer Street in Natick, Mass to be excellent.
Both the PO of my bus and Boston Bob referred me to Greg; I have been pleased
with the work he has done.  A couple of miles off Route 9 in the center of
Natick; pretty easy to get to from 95.  (508) 647-9749

Best,
d.
1990 GL -- "Mudskipper"