| The Alloy Patina Pocket and Bezel are ultrasonically welded onto the Door moulding.
They can be drilled off from the back surface but then they will need to be stuck back on using adhesive as drilling them off destroys the pegs that hold them on.
As the Door moulding is covered in TPO you will need to use very good adhesive to stick to it, suggest ITW Plexus 2 pack structural methyle acrelate.
Not any easy job but can be done. | 
