Sorry guys if this is a pain in the butt for ya. But I found another solution that I settled on.
I was looking through a guy's build photos, and I noticed a lot blue smears on his doors. He told me he uses everglass, or a short-strand reinforced fiberglass. He said he dents the hole in slightly with a hammer and punch, rather than counter sinking the hole. First he said to hit it with some 40-80 grit to give the fiberglass something to hold onto. Then dent the holes in a little. Also clean the holes out with a dremel so they are bare metal. Then sand the 'glass off and skim coat with your favorite body filler..
I was looking through a guy's build photos, and I noticed a lot blue smears on his doors. He told me he uses everglass, or a short-strand reinforced fiberglass. He said he dents the hole in slightly with a hammer and punch, rather than counter sinking the hole. First he said to hit it with some 40-80 grit to give the fiberglass something to hold onto. Then dent the holes in a little. Also clean the holes out with a dremel so they are bare metal. Then sand the 'glass off and skim coat with your favorite body filler..