i just got back from basic training this summer and now when i go to start my 2002 yzf 426, it wont start. I have to coast start it. Once it is warmed up it will start fine, but if it sets for an hour i have to coast it again. I changed the plug and its got brand new 94 octane gas in it. It started fine when i left. I didnt know if the valves might need adjusted or what. Any help is appreciated.