Well, I could tell you what to do but, I guarantee you would have problems if you haven't jetted a bike/atv before. Atv's/bikes are all jetted lean from the factory to pass emissions. If you have a Cali spec model (which can turn up anywhere) it is even worse. That's why it runs crappy stock. Hard starting, cold blooded, has the hiccups, runs hot, abysmal performance, etc.
I suggest you pay the $ and have the shop tune it. Mikuni/Keihin carbs are very unforgiving unless you have "the touch".
