So my 2004 KX 85 won't idle. It runs perfectly fine, doesnt bog or anything. When I go to turn the idle screw in or out, the idle speed doesnt change. Yes, I'm sure it's the IDLE screw. So I took the carb apart, and found a 45 pilot jet (which i hear gets clogged easily). I have a full pro-circuit exhaust on the bike which was on when i bought it so i assumed that the person who owned it before me jetted it. But as i understand, when you put an aftermarket pipe on, you need to jet your carb, therefore getting a different pilot jet (correct me if im wrong). So I just need to know what to do. I know I need to clean the carb really well, but what jetting tunings? Thanks!