I have stock air box and already adjusted the screws. I opened up the carbs the other day and they are pretty clean. Its running alot better lately. I think the problem was the guy i bought it from had blocked the drain lines from the box and the fuel was collecting a little every time after rides. I opened it, cleaned it, let it air out and put some lines on. I think the fumes were not letting enough air to mix in, i guess i will just see how she runs and hope she keeps running strong. thanks guys