You must be new to Vx, or just been one of the lucky ones who hasn't quite run into th problem yet. Its not the regulator thats crappy, the reason that it craps out is because it has to overwork itself to push agaisnt the resistance from the windows being out of alignment. Its kinda like when hold a drill by the chuck and stall it out, same principle.
I think I'm going to run the issue by a lawyer this week and see what they say, cause this is getting pretty old. I wish that I didn't love the car as much as I did, but like all of us that are lucky enough to have a Vx, I can't part with her.