I have a Thor Chateau 31W with a full wall slide. In its 3rd year the slide started binding in the rear - starts together, then the rear slows down for a few seconds, then catches up again after the front is fully extended. It continued to get worse until the slide would stop and get stuck. The last time required 2 men and a woman to push as my wife was on the switch to retract the slide. It is now at Camping World - they are replacing the slide mechanism - $1150 for the tracts and the motors plus $2000 labor. (6-8 weeks). The controller never showed any fault codes. The slide needs 4 motors and not just 2 as they have to work very hard to move this heavy slide.
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