I started my bike and when I moved it, there was a pile of grease and a rubber cap on the floor. I assume rhis is from the airbox overflo. When I went to replace the plug it looked like a plug had been on the outside of one of the hoses, but the cap wouldn't go on, it slipped easily into the other hose beside it. My ? is should the plug go on the inside or outside and should there only be one hose plugged? thanks for any help