I don't know if this is getting too boring with the rust removal pictures, I'll keep them coming if anyone is interested.
I did complete the de-rusting of the skin today

The lower corners were the problem areas.
Overall shot of the skin, the yellow was caused by the flash, the stool in the background has white letters but they also appear yellow.
As I expected the frame is slow going. I'm making progress but it sure is slow.
Most of the rust is out but there is still a lot to come out. Some of the pits are deep.
This is a overall view, I called it a night before DA'ing and wire wheeling the entire surface. Every treatment of Naval Jelly dissolves some of the rust and weakens the bond of the rust in the pits. It then requires a session of DA'ing and wire wheeling to get the loosened rust out of the pits to prepare for the next treatment of Naval Jelly.
In cleaning the parts of my vent frames I decided that the vent window chrome was not good enough. It's not that it's all that bad, it's just not great. So I ordered re-chromed frames today.
From 6 feet away you probably couldn't see the defects, but after all the time and money I have in the project I don't want any flaws. If you look closely you can see some pitting where the frame over hangs the desk.