i recently installed a quickshot on my 450f. took the bike to glamis for 3days and it rode perfect....like a champ. my next ride was a star west, bike rode great there as well. i could really see the improved performance from the quickshot on hard packed dirt. 1 week later, today, i start my bike and while its warming up i notice the idle sounds different. it sounds a lot rougher than normal with a hint of clank. not like the piston is going to break loose or expolode, but definately different. i let it warm up and then took it for a loop around the block. every gear seems to vibrate the hell out of my hands and feet. also, the bike is cutting out throughout the throttle range. i have riden this bike on the street numerous times and it is usualy very smoothe. roll on the throttle and the front end lifts in every gear. now its very jerky and like i said, the vibrations are that of a 1980 2 smoke. when i got off my hands were numb. there was also more backfiring than normal. has anyone experienced this with their 450? could it be that the quickshot has effected the bike in some way? the bike seems to run instantly leaner now, not bc the quickshot, but just because. i dont think that if i adjusted the fuel to air mixture, that could solve the problem im having now. one more thing to note, the bike exhuast smells hotter, like the smell dirty water has when its evaporating. any thoughts on what the deal is????