I have a lot of trouble rolling the driver's side door window up and down on my '65 coupe (3 speed, 200 cu in engine). Every once in a while it will roll easily, but most of the time it won't I've taken the door apart a couple of times and adjusted the tilt of the vent window assembly, the tilt of the main glass assembly, and the equalizer arm. I've also greased the rails and rollers. (As an aside, is it better to use white lithium grease, general purpose grease, or something else?).
Despite all this fiddling around I can't get the window to move easily. One thing I have not messed with is the window regular assembly itself. I've thought of replacing it but I keep thinking that there are so many other things (like the things above) that play a role here that I would be surprised if the regular itself is causing the problem. There is some wobble to the "stem" of the assembly that the handle attaches to, but I've also noticed some wobble on the stem on the passenger side and that window generally moves pretty easily.
So, I guess what I'm asking is what are the most likely causes for the window being hard to roll. Is it the case that it is a real art to adjusting all the components just right?
Thanks.
Richard