So I got a new carb, gaskets, etc for my xtreme 125 and it runs great now. The only problem is the idle. I wont idle on its own unless I turn up the idle screw pretty high but after 5 minutes of riding it the idle is then to high. Its almost like it takes the bike 10 minutes to warm up. I know this is a pretty broad statement but does anyone have any ideas. It has the same size jets as the other carb that it replaced. Would the air/ fuel mixture screw have an effect on the idle?