Every trim hole has any or all of an assortment of baddies. Cold lap, MIG spiders, headless screws, and pin holes (some from very large pins!). I have included a photo of a common MIG spider. I am sure there is cold lap in this one as well. Grinding it flush will probably tell the tale. On the right side, some actually fell out on the ground once I got the back side cleaned up. In the second photo, the white dots on the right side of the photo are light beams entering from the outside of the car. One thing which is worse on the left side than on the right is where the PO ground into the body line. In two spots, he actually ground slots through to the inside. I will probably cut out an 8" to 12" section and form a new piece to weld in. The PO was going to "skim coat it, prime it, and paint it." If you squint, you can see the crack rings that paint job would have had sooner or later. I have a lot of grinding, patching, welding, and grinding to do to get this all fixed. And I have a window box to rehab. Lots of work.