Sills is a great place for parts and service. I go there for my 77' GL1000 and usually find what I need. They also have tips for how to put items on the bike, which is good b/c I have no mechanical skill. I get by with a little help from my friends (and Sills!) I digress...
They have bikes, ATVs, lawn mowers, and snow blowers.
It might be a little out of the way...but its worth the trip, honest fair prices and good service