my raptor came with a cone shaped K&N intake, but it didnt have the plastic cover for the air box. Will it not fit with an aftermarket filter or did the previous owner just leave it off? Ive heard of people riding with it off, but i notcied after spraying it off lightly, water was somehow splashing lightly on the cover over the cone, even with the seat on, and i dont think thats a good idea :-/