You can use the panel adhesive for attaching door skins. Be careful with anything liquid, it can run down, and make a mess of your door. Attaching the trim to the vinyl is not strong, and will probably rip the vinyl off of the door. If you can put a screw in from the back side, and use it as a stud to glue to, that may work better by taking the load off of the vinyl. The original pins are heat welded from the back side.