Wednesday during a trip from spring in the Willamette Valley down to late
winter in Klamath County my driver's door window stuck - halfway closed or
halfway open, depending upon your point of view.  Since it was starting to
snow, my view was that it was halfway open...

Inside the door is a sliding window guide and the guiderail.  The guide had
jumped off the rail, and would jam against it about halfway up.  After it
jammed I was trying to coax it to go one way or the other, and my handle
broke.  

Anyway, before I put the door back together, is there some lubricant to put
on the rail and/or slider?  Specifically, what do I avoid?  I don't want to
put something on there that will gum up later on.

Anybody have a handle for sale?

Matt�