Please help me find this part!! It is #658.4.002 1B. It is the cover piece that holds the throttle grip onto the handlebars. It has 2 small screws in the back and is located just to the right of the kill switch. If I can find one, I will buy 10 so I can overtighten 9 of the new ones and then smack myself in the head with my socket wrench. :-[ Thanks all!!