Or, the really nice guy whose lunch break times with yours; incessantly pondering how third world hunger is our fault...
There's been this annoying rattle, very low volume but high frequency, emanating from the scoot when stopped at lights. Only heard when resounding off the sheet metal of whatever adjacent car.
Dealer: "Can Not Duplicate Problem" Grrrrrr!
So I spent a few hours inspecting every bolt, harness, cable, shroud, plastic...you name it. Finally last week I spent the morning on my back feeling up my bike, and found it!

a loose cotter pin on the center stand. Cut a piece of tubing to fit the end (thought about tape but that might trap dirt in there) and rattle gone.
Peace in our time!