had my air filter light up and smolder when my bike spit back mildly when starting it, got it out OK but don't want to repeat the experience....the element was a paper Fram, are others less flammable? a quick google search brought up some similar fires, interestingly looks like most were big singles and that maybe K&N elements are somewhat fire resistant but they get mixed reviews here. Does the K&N element that fits in the stock filter housing work well? got the one piece K&N clamp on replacement as a spare with the bike but from what I've read here (and heard from the PO) sounds like they are lousy for performance