ok, so I've tried all of these remedies on customer's cars. the only thing that has worked long-term has been like JCA's post (the screws). now that I own one myself, I appreciate the idea of using BMW's screws with covers. I am very particular about the car and have had poor results from industrial hot glue, liquid nails, JB Weld, and RTV. If anyone has any other adhesives to try, I would appreciate the "heads up", as I don't like punching (or drilling) holes in my baby unless I
have to.
