Cowhorn

My rear license plate frame keeps popping out of the holes in the rear bumper while driving. Is there a gasket or something similar that I can put either in the holes in the bumper or on the stalks on the plate frame to create a better friction fit?

ilko

My old C4S had that issue. A slightly wider screw solved it.

Blue TTop

One option is SS blind nuts, which can be installed without bumper removal.