So I had the dealer install a 16t front sprocket, and I rode it once since then. So tonight me and the woman go out and when I am comming to a stop, and approx 25 mph I get this vibration for a second that I can feel through the clipons and the pegs. Its really annoying and it dont matter clutch in or out, neutral or in any gear. It is bad enough to annoy the shit out of me. Any ideas":? I tried it on the rear stand and I could bearly feel it. Im gonna call the dealer on monday, but maybe you gents can help me again.