I also had floppy vent windows, and after learning from the digest
that there is a screw you could tighten to fix the problem (even
though it is impossible to turn) I had to look into it.  After getting
the door panel off I saw that the screw would indeed be impossible to
turn using any regular sort of screw driver, but the head on the screw
looked like it might be thick enough to grap with my vice grips.  I
know vice grips are bad and all, but using a very small pair (the
smallest I have seen) I was able to tighten the screw.  After getting
the door panel off total time to tighten was less than a minute, and I
was able to tighten as much as I wanted.  Because I might have rubbed
a bit of paint off with the pliers I sprayed a bit of primer in there
after I finished.  I tightened the other door's window, did an
interstate test and they are as good as new, it is so much fun fixing
problems that you have lived with for so long!

Jonathan Poole
'82 Westy