I am missing a part that is a kind of retainer clip that holds a cover plate onto the back of my headlight assembly on a 2008 Beetle. Without it, I am worried water will get into my headlight assembly. The clip looks like a giant bent up paper clip, but much bigger and thicker. I am trying to figure out what this part is called and where I might be able to get one without buying an entire new headlight assembly. Can anyone help?