I have a 02 WR426, air box lid removed, throttle stop fixed, spark arrestor removed. I just cut the dreaded grey wire and now it is harder to start and keep running. I do have to leave the choke on longer too. At the risk of sounding like a real dumb AS*, I have to mention the temp has dropped from 30-40F to 10-20F since last time I rode. I am at about 1000ft. above sea level(Southern Ohio). Would the temp change make that much of a difference? Lastly, with these mods will re-jetting be necessary?