so, after 10 months I went to take off my rear plate to wax and clear behind it. the screws were stuck. i finally got them out and coated with fluid film, a year later i took it off and the plate rusted on the paint. i got that off and yes the screws came out easy this time.
however what to do for the rust? i had the plastic plate from the dealer behind my plate but the bottom edge rusted and stained my truck. i found this on amazon, its a silicone holder for the plate. it has the added benefit of not rattling and makes the whole tailgate seem solid when i close it now
the only thing i will warn you of, the silicone holder is a tight fit and if you are not careful you will bend your plate
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1