The problem is that the stairway and door system have been in service for so long that a number of key parts are bent and worn. When I got there that 2x4 was used to help hold up the door. If you look at the top photo you can see the bends in the handrails where the door has been allowed to fall down on the stairway. While I was there they managed to find most, of not all, the problems with the door mechanism, but it'll take a trip or two elsewhere to find replacements. While I was half-way listening to their conversation, as they came across yet another problem with the door, the guy in the background (below) said "It's always something else, isn't it?" To which the guy in the blue coveralls replied "That's what makes aviation interesting." Yes, interesting indeed.
One other interesting observation. It was hot, but not that hot. I attribute that to the white paint on the fuselage. That, and my interest in the plane. I was so involved with photographing and just slowly looking and taking in everything that over an hour and a half passed before I decided I'd seen and done enough. I can't explain why I find old aircraft fascinating, but I do know if I'm not careful I can loose track of time very easily.