[Mulletbird]

I'd try fixing it yourself first. With my Firebird, I asked about how much for an ignition timing adjustment and carb tune (it was really out of whack ... I told them I'd supply parts, all they had to do was tune it) and shops wanted $300+ labor for that simple job. If you can't tune it out, then yes, go to a shop or (if mechanically inclined / have a friend who is / willing to offer beers) do it yourself. You'll save a ton of money that way - beers for 4 people, maybe $30, shop labor, $300.