Going to ride the Colorado 500 next month! (I know. I got lucky.) My 2007 WR450 is currently set up for sea level with all the free mods, and the AIS removal kit. The kit came with a 48 Pilot jet (45 is stock), and a new needle with the clip on the 4th slot down. It runs great. What will I need to do to the jetting? Does anyone know where I can find a Correction Chart for 7-8000 feet? If not, could you provide the directions for this altitude from a JD kit? I am hopeful I do not have to buy the kit just to replace a jet... Any advice would be appreciated!