So the other day I went to clean my K&N filter after riding, and when I opened the lid to the air filter box, I smelled very concentrated gas fumes. As I took the filter out, I noticed the filter itself was damp with gas also. At the bottom of the box, I could see dark outlines of where the gas had been, but was now evaporated. Does anyone know why there is gas in my air filter box? I haven't made any mods to the engine except for the bolt on K&N filter. Any help would be appreciated. Thanks.