Hello, We bought the 2017 35SD used with 3k miles. It now has 17k miles and it is in the shop. Although we enjoy the rig the full wall slide tracks and Motor were recently replaced. There was also an issue with water intrusion. These both have occurred twice. As a result I am in the process of trading it in on a 2023 Magnitude BT36. The new one has the refrigerator on the stationary side which I believe was a smart move on the part of Thor. This should eliminate extensive weight on the slide mechanisms. We will see.