Originally Posted by echozulu
Thanks! I'll throw a rivet in there and call it a day.
I am dimpling through the vinyl. I don't remove it until I prime. I figure for one I'm about 400 feet from the ocean, so it helps a bit with the humidity here. And two, it protects against scratches and oil from my hands. I haven't had anything unexpected happen from the blue vinyl being on there, am I missing something? Total beginner really so any advice helps.
Try dimpling on some of the trim pieces both with and without the blue plastic.
Take the plastic of the one test case and compare the dimples for sharpness and depth.
If you are happy with the results - carry on. A lot of it is technique dependent.