I have an 02 400 SX that ran great in the summer time. She would start 3rd or 4th kick. Now, in wisconsin (~1000ft), it is in the teens for temperature and she isnt running well. So I raised the needle one clip and she didnt start. So then I turned the fuel screw mixture in one turn. Still no start. I went back to the intermediate needle setting (#4 w/3 above and 3 below) and turned the fuel mixture screw back to where it was. She started but very rough and ran like crap. Turned the fuel mixture screw out one more time and she starts a bit easier but still runs like crap and doesnt idle. AHHHHH! I am ripping out my hair. Valves are fine, carb is clean. ANyone have any settings for me to try out??? I need to get out and ride on the ice. Thanks so much guys.