Ok so I have this 97 sport 400 , and it ran great for about a week, then i was riding just putting around set up hunting gear. On my way back in the iced snow I rolled it on its side trying to tail wip in the snow , no damage after flipping off its side I hopped on pull started no problem , next day it ran like crap , throttled to keep idle , backfires when throttle is pressed past 50 or 60% . Now It won't start at all and has brand new plug with great spark, reeds look brand new , can someone tell me exactly how to bypass the kill switch assembly and throttle sensor ?