Great writeup!
The window mechanisms on the coupe are so different than the high volumn sedans and many parts are unique to the coupe. I recommend cleaning and lubing often and not using the windows any more than you have to, especially the rear ones. On the big side windows I'd tend to help it up and down with my hands.
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.

[SIGPIC]
..I also have a 427 Cobra replica with an aluminum chassis.