Hi All -- any idea how to secure this trim piece to the back of the trunk lid on my 2007 Taurus? It stays on, but isn't on tightly. It looks like it has 4 screw holes underneath, but none of them has a screw in it. I tried just adding some screws, but they never got a grip into anything behind the trim piece... A few years ago I did get a remote keyfob installed for my car, and it included a button to open the trunk... Maybe they took this piece off to install something for that? Any suggestions?