I had thought about filing down the edge as well since there is just not enough clearance for the tabs, but then I noticed the K&N filter is for a k7 400 & mine is a k8 so maybe the specs of the scooter changed just enough to make it not fit. In the end I just went back to the stock filter. :?Mike337 said:I installed mine tonight. I took the lip off the backside with a bench grinder, problem solved. I just don't like plastic on plastic for sealing, so I smeared a little grease around the outside edges.