Well, I sprayed lithium grease in the channels and while it smoothed the window a bit, I ended up taking the felt/rubber guides out of the window channels and cutting some of the material where it seemed to be wedging the window. I have no idea why simply sitting unused, the windows would wedge like that.
However, in the meantime, I took the whole window lift mechanism out of the door, disassembled the gear assembly, and had a look-see. I thought I had replaced the nylon gear years ago but lo and behold, I hadn't. While the assembly worked smoothly, the gear had a crack so I'm going to replace the whole mechanism.
But not with a brass gear. I'm going with an entire motor/gear combo from a 1990 Ford Aerostar. The modification looks to be a piece of cake as indicated by this article:
http://www.geocities.com/pocascp/Technical/Pantera_Wind...tors_Replacement.htm
I'll post later when I finish the job.
-John
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