Hmmmmm, very interesting updates, thank you everyone that has responded. I have written off my drive door mechanism as goofed beyond all recognition; Had to reweld it in 3 places alone when I got the truck just to make the door halfway work, so it not functioning right is the norm. The passenger door in comparison is heavenly. Tight, no rattle, shuts easy, latches tightly, etc, but it does not unlock the inside lock when the door is closed as is reported above.
This makes me wonder if the passenger side is also goofed (should it do as everyone's above) or, the original commercial company that owned it modified it somehow. Any aftermarket should do as is said above, so I need to just sack up and get the parts, but other farm expenditures have taken precedence thus far.
