Does anyone know where I can get a thumb adjustment fuel mixture screw for my '03 650R? My buddy got one for his WR450, and I think it would be cool, being I have to adjust my carb more often for elevation. P.S. I finally got around to cutting out my left side panel. I did the whole screen & rivets myself. HOLY SH*T!!! People said it made a difference, but that is scary power now. I can't believe how much power you can gain on this bike with very little $$.