Check all the fastners you can see then lie on your back and check the ones on the bottom of the covers, they all work themselves loose i removed all of mine(one at a time ) and applied some locl-tite to each one.
Rubber tape between the screen and radiator. Also the hex heads are fitted through a brass spacer that can rattle, some double sided tape between the spacer and inside of the cowling will hold them in place and stop the rattle.