Just done the plates on mine, Front had 3 self tappers in 3 official recesses in the number plate holder, but the dealer had attached the plate to the holder with short self tappers, that had not punctured the crossbar but had been buzzing on it.
Cleaned and polished the crossbar, ceramic coated it and re attached the holder and stuck the new plate with new sticky pads after wiping with IPA, (the most important bit that usually doesn't get done), looks much better now no screws/covers showing.