Wen i pulled my first carb off I messed with my choke adjustment, the wire that attaches to the top of the carb and has the long screw on it.. AFter I did all this, my sled would only idle at like 500rpms and kept wanting to die, I turned my idle screws, and after 4 good turns, it only bumped it up to like 1k. It will idle without having to play with the throttle now, but its kinda rough and still seems to low.. So im thinkin I messed my choke cables up. Right now my choke screws that go on the top of the carb arent screwed in very far. SHould I tighten the screws down more so less is exposed? will this raise my idle?