Hey everybody. I don't usually post questions like this but I recently purchased a 1986 Yamaha IT200 in pretty rough shape. I have basically zero familiarity with the IT200, but it seems like it has a lot of potential to be a really nice little trail bike so far. Unfortunately it has some issues. First off, while the bike runs, it always wants to take off as soon as you kick it to life - even with the throttle shut. I have double checked that the throttle slide is inserted correctly. The throttle cable is not sticking and the slide shuts all the way correctly. The slide seems to be shutting correctly (and has been inspected through the air cleaner). Does anybody have any wisdom to offer on this issue? The carb has been meticulously cleaned but the main jet is definitely too rich for my current elevation in Flagstaff, AZ. There are two thumbwheels on the side of the carb - one appears to be an airscrew adjustment and the other appears to be the idle speed adjuster screw for the slide stop. The air adjuster I have guessed to be one full turn from the seat. The idle speed/slide stop adjuster is backed out all the way. Theoretically at these settings the bike should barely run with the throttle shut, let alone start running away from me. Any ideas are appreciated. Thanks!