Modern Vespa

Hi friends, there was a month gap between disassembling and reassembling required for replacing the rollers. I ended up with one last bolt and I can't figure out what it goes to in this process. I had to move the the tail light cover, a piece of side trim, airbox and the other covers to get to mechanical bits. No idea what this bolt goes to, and I foolishly did not take notes as I took it apart any ideas thanks! EDIT: I just took it out around the block and noticed the annoying rattling I was trying to remedy by installing Dr pulley sliders is about the same or maybe a little worse.

holds the airbox in place. in the hump on the underside. two of 'em. and on some models there's a third at the front corner of the airbox on a bit sticking out

Got it thanks!