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2019 3791RD. Yep, ours stripped too. Door has always worked fine. 3 weeks ago the bolt slipped out of the trolley roller. I screwed it back in and tightened set bolt. Happened 2 more times and now the threads of the trolley are stripped, I think the trolley is a soft metal. We are on the road so I will try a quick fix then order a new one in 2 weeks when back home since you said the new design is better.
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