Have you removed one of the jets to verify the size yet? I know you say you think it's a 200 or 210, but I personally never trust my own memory for something like that. I'd be staring at the number on the jet as I typed it on the screen. Anyway, without knowing for sure there's no way any of us could give you advise that would be worth a crap. No offense fellow HQer's.
Also, it wouldn't hurt to check the float height as well before doing anything drastic.