Sounds like I have a screw loose? Well- I did. I used foam rubber in all the usual places (gauge surround, tab over headlight, etc). Quited the dash up nicely until yesterday a new buzz occurred that I couldn't find by the "hand grab" method . My left mirror also came loose . This morning, just before my ride, as I tightened the mirror I noticed the top screw of the left switch cluster was gone and the cluster was slightly split open. Long story short, I replaced the screw with lock washer added and the new buzz was gone . Might be worth looking at. Hope this helps.