No BGN, I moved back to California because I couldn't stand the rain.
I would guess that unless it was in an accident, your shifter could probably be fixed. Taking it off and dropping it in a solvent tank for a few hours works wonders for clogged up shifters.
As far as places to take your bike, I don't know where you live but one of the best stores I saw was an odd triangle shaped store that was right next to that trail(you could reach out an touch it from the trail) that goes from the locks over to Redmond. It was about a mile east of the college. The other place was also close to the college where they make Rodriquez bikes. From what I observed, I'd never take my bike to a place like Performance or Greggs up there unless you know the mechanic that will be working on it.
This whole thread got me thinking that my prize for 2nd place at the mountain bike national finals bike for the cross country intermediate race in 1990 was the first generation SPD pedals and shoes. Those pedals were ruined in the next year at the Mt. Shasta race where it rained and it turned into slogging through 36 miles of mud. Probably the hardest race I've ever done and it ruined at least $600 of parts.