I just came inside from fixing this same issue. Passenger rear window bottom bracket moved forward and the little wheel came out of the track. Used a small cats paw to reach inside and tapped it rearward with a hammer until it lined up with the back lower part of the window. Cleaned and silicone...
If it were me, I'd just stick it out for a Warn. Not the budget Vr Series either. I've had 3 different ones on three different vehicles and never had any problems. No overheating, no warranty issues, etc. They're more expensive for a reason, they're just better in my opinion.