Hi PIN here, got the same bike, after about 1500 miles mine did the same thing. The bolt at the top center under the tree is surrounded by a rubber grommet. Not dence enough, I had the thing apart when I used the bolt for a ground wire. Heres what I did, I took 2 TY-Wraps about 1/4 wide and black cut them about 3 inches long keeping the head. Fold them in half and insert them between the grommet drum and the bracket and they snug it up nicely, and they stay put.
PIN