I just rebuilt the top end on my 2002 cr125and it runs great (for the most part). I have a slight issue with the bike though. My problem is I have the air screw at the stock setting, and the idle screw turned all the way in but the thing still doesn't want to idle. It's really crisp at idle but it doesn't idle like I said. I've tired playing with the fuel screw quite a bit turning it way out, way in, etc. with no change in the idle what so ever. I just rebuilt the carburetor and it was doing the same thing before I rebuilt it. Could my pilot jet be too big (or small)? Thanks.