[lupo]

Having worked on a lot of old cars with a lot of stainless steel trim the problem is the clip scratches the paint around the hole it starts to rust and the rust travels . When you pull stainless steel trim off of 50s car there is usually quite a bit of rust. Apply Aluminum pigmented permanent rust sealer around these holes and in that area because once you scratch it the rust will not travel beyond the scratch and will seal whatever existing rust was under the trim. 2 coats. Then prime and paint. Then you can use your 3M caulking strips. It was the first thing I addressed when I wrote the Tip Sheet. Hope this helps