For some inexplicable reason, I thought it would be easier to replace the door weatherstripping if I removed the interior door panel. Don't ask. I don't want to talk about it.
Found this little morsel inside, which succinctly answers why the door won't stay open on it's own. One day I am going to remove a door panel and pull out a Beretta 9mm. How many pine needles until then? Maybe I should leave a Beretta in there. Would certainly improve my chances of finding one. A ziploc full of cosmoline with a handgun floating like a Hirst.