Hello vint_mow, CyberJack & Gadge, I have an air powered palm hammer I got years ago at SuperCheap auto and it removed these stubborn pins on these unusual rivets in the doors on a Ford I was working on, where a large hammer didn't seem to budge them. It removed them with ease.
Ahh, if only victa had kept producing the thumblatch catcher series, they would be in better shape today!