I've narrowed it down to a frozen lower hinge pin. It was a little sticky before it went into storage, and then to the body shop, and then to the paint. That was well over 18 months. So it only got worse. I tried to beat it out Saturday, but no luck. So I'll have to take it somewhere and have it removed by air hammer. It has actually weakend the lower door pillar. So I'm pretty sure that's the problem.
Worse part, I'll have to touch up the paint on the hinge. Good thing I chose a late model color. It'll be easy to get touch up paint.