W116, Body and Interior Specific Aid

I am about to take my front driver side door apart to repair my window,
according to Kent's manual on 123 door repair...
The window motor works fine, the mechanism is just not pulling the window
down. the regulator comes down, because I can then open the window by
pushing it down, and then when I push the button to close the window, the
regulator pushes the window up fine. Do you have any pro tips for what part
I might need to remedy this situation. I have already purchased a regulator

My 83 300D Turbo recently developed some quirks such as: surging/lurching while driving, not shifting properly(rpms getting way too high), and not engaging when put in gear. When looking under the hood, I happened to notice pink fluid flowing through a couple of the clear vacuum lines. I assume this to be ATF fluid. I began testing vacuum at various points, and found that the vacuum device on the drivers side of the transmission didn't hold vacuum, there were a couple of other connections not holding vacuum as well including one on the vacuum device mounted near the IP.

We just bought a 1974 280C from the second owner.
Jack, reluctantly sold his "baby", because, now entering his late 70's, hip replacements have made entering and sitting painful for him. He broke the map pocket on the driver's side swinging his legs into the seat.
The speedometer's 76000 miles appear to be reasonably accurate... tires mounted in 2001 were recorded @ 71000mi (and there aren't that many miles to drive on a small island like this one), etc. He has kept the coupe immaculate.
Is the dashboard instrumentation a weaklink on the W114?
The VDO quartz clock is non-functioning. Jack velcro-attached a tiny digital clock to keep time.