Hi all, I'm having fuel issues and I'm stumped on what it could be, I've ran all different main jet sizes to play around with fuel after 1/2 throttle. Was running 117.5 mains in it and when I would get on it hard it would spit and sputter and my dad riding next to me says it would smoke alot, so I backed it down to a 112.5 and now I'm running lean, if I get on it hard it spits and sputter but if I pull the choke half way on it clears up and pulls great, I don't have major mods on it, has a sidewinder style 4 into 1 header with straight pipe and foam pod filters, I'm not sure about internal mods as far as cam or anything, when I first got the bike about 6 months ago I did all the time up stuff such as valves and plugs and timing, I don't really want to pull the carbs and adjust needles but looks like I might have to. Any ideas right off hand?