Well I had a friend put on my chain and sprockets a couple of weeks ago. I guess he didnt tighten the nut down enough on the front sprocket. Well it is now gone. My question is where can I get a 36 millimeter nut and lock washer? I have gone to all the part stores and nobody has them. I really dont wanna wait on yamaha but I guess I might have to. Anybody have any suggestions?