I was messing around today trying to think of a way to fix the rear pop out window on the drivers side of my 210 that has been broke since I got the car. I have two kids so I'll never hear the end of it if ONE has a functioning "cool" window. Anyway, there is a small plastic piece inside the latch that acts as a lever when opening the window that was broken on mine. The window would flop around pretty good or pop open when shutting a door.
My daughter and I used some fencing wire to replace the plastic link piece and it works great, I had to drift out the pin holding the latch to the bracket and flair the end of it open a little bit when re installing it to keep the wire from sliding off with extended use. All in all it took me maybe and hour using a pair of needle nose vise grips, a drift, hammer and vise. The window functions perfect now and it was an easy fix. When the latch is closed you can't see the wire at all. Anyway I thought I'd throw it out there for anyone else needing the fix. Oh and its galvanized too! lol