[Guido]

I had a rubber sheet and cut out rubber ring pieces (steady on!!!!!!!) that I put under my dzus fasteners. Eliminates vibration that could undo the fastener but also "fills out" the gap between the fastener and the panel making a much tighter, and less likely to come undone, fit.

Basically used a paper hole punch to punch out the holes in the rubber sheet and then a pair of scissors to cut the pice aroudn the dzus fastener.

If you don't have rubber sheeting, an old bike inner tube will do exactly the same.