Wanting to replace the black gasket/seal on these, plus take off the outside chrome trim (looks much like the inside one). I removed the screws on the outside chrome trim, pretty much a mirror image of the inside one, but can't seem to pry it off. Maybe I just need to pry a lot harder? Do these inside screws need to be removed also? The screws just go into the fiberglass right? Not into opposite halves of the port windows right?