[RussWhite]

I have completed repairs to my trim. In the end, I decided to drill and tap. I purchased a combination drill and tap from McMaster and went with 10-32 I think. Never used the drill portion of the tap as I purchased several bits the correct size and only used two I think in drilling all the holes. I purchased stainless torx head flat head screws and countersunk each hole in the trim strip. I think it looks a little better than pop-rivets would have and I can easily remove it to check the condition of the metal behind it.
The biggest boo boo was when I removed a piece of tape from the trim that was holdering the far end in place as I worked at the other end. The tape actually pulled the paint from the alumium strip - bummer - postage stamp size.