The bike started earlier but when i would give it gas it would backfire and shut off on accel. past the quarter throttle mark. Bike ran perfectly fine before i put it away 5 days ago, long story short i removed the airfilter to clean and found it had no guide on it. It was just mounted to the airbox via the bolt so i decided to clean it while i replaced the clutch. Anyways i wanted to take it for a ride w/ the new clutch before i cleaned the filter so i threw it back in there (mind its not that dirty) anyways now it wont start. Could if be that it needs that guide? I just dont understand why it ran perfect before! im dripping with sweat and tired!! sorry if i rambled need help please!!