We have a 2020 Thor Delano 24 TT with what sounds like a similar problem. While at a Mercedes Benz Dealer correcting a recall issue the service manager commented about the crack as he was reading the VIN no. The crack is very near the VIN and is about four inches long. No sign of a hit. Could this be a stress crack? The unit is new and has only been driven from the dealer to our storage building. It has not been on any trips...
__________________
|