I removed the shim and set about to raise the end of the door slightly by adjusting the "catch" in the door jamb. Surely there is a factory correct term for that part...I don't know what they called it in the FSM.
I ended up pulling it out to find multiple cracks in the sheet metal.
The plate the catch attaches to fell inside the quarter panel. I had to pull the interior trim panel to gain access. It sure is cramped and busy in there. It has been a long time since I've looked at the quarter window mechanism....Holy crap, the engineering that must have gone into this design!
A few minutes with Mr MIG.....
Followed by some grinding and filing and it was ready to go back together.
That plate inside the quarter is just held in by thin stamped sheet metal that bends over the plate. One tab was bent away from years of abuse.
You really need long and skinny arms to reach up in around the quarter window stuff. No way that IronBuilt could have done this.
The gaps look good but the latch will still need more adjustment. The door handle wouldn't open the latch from the outside at first. I found that my fill work went a little too far into the opening.
The blue arrow shows the moving part of the thumb button. It kept hitting the metal shown in the red arrow and wouldn't allow full travel of the button. I simply shaved the metal back at the red arrow and it worked fine.
I'll need to put a mirror on it and the stainless steel trim at the top of the door and then....move onto the fender.