Winnebago, Schwintek In-Wall Slide-Out system - Problems ??

My Travel trailer has had 3 Schwintek failures in the last year. The two main slide room failures required sending the trailer back to the factory, as the slide room was too large for the dealer to R&R. The dealer was able to repair the bedroom slide out. I'll probably pick up a Good Sam warranty, but this will definitely be my last RV with that system!