I have an 04 WR 450. I can't seem to get the jetting right. I have changed several jets and can't seem to get the right combo My local dealer is worthless and i have turned to the experts on TT. I live in wyoming, so I will constantly ride between 6000 and probably about 9000 ft. I live at 6200 and do most of the riding around there. I have got several suggestions from TT, but I notice they are riding in much lower elevations. Right now I am running a 158 main jet, 45 pilot, 65 starter, and a 60 leak jet. Every ride, my spark plug is white Please help,, thank you all.