I am working on a 67 Coupe, NJ, July 67 build that came with a factory vinyl top. There are two nails in the windshield frame on both sides of the car. One right in the corner and the second about 4" in from the pillar (see arrows in photo). Were these nails used to secure the vinyl top during installation? These nails have a larger head than the trim clip nails. Thanks Mark.