I discovered that the air box mounting bolt and rectangular nut on the RHS is missing. You can see the LHS nut in this
image near the thumb, and it is missing in this
image. I wonder why the LHS nut is properly fastened in the plastic, but the RHS nut always slips out.
I need to find/make a replacement nut. I believe the thread is M5. Would somebody please measure and post the length, width and thickness of the nut, the next time you remove the air box? Thanks!