When i got the bike, it had no air filter, so i purchased the one i have now. Before it arrived though, i cleaned out the carb completely, and throughly. Once the filter arrived i put it on and this was the problem. so what we (Tim P and I) did was play with the needle like joe and zippy are suggesting. We found that no matter where the needle was, the same thing happened. So, Tim wanted to do a test and we took the needle all the way out to see what would come of that. Well, after the initial test drive, I realized that I could open up a tad bit more, so we left it out.
Once things start settling down a bit with the holidays and accidents, I'm going to go over to Tim's or the Barrens' house and see if they can help me with all these ideas.