We just purchased a 2020 Thor Windsport 29M. We informed the dealer of a soft spot in the shower just to the left of the drain. After the shop “checking” it, they said it was a design flaw and the shower drain pipes were in the way so the floor was open under that small area to accommodate the plumbing. Maybe I’m a skeptic, but not believing that story. Anyone had issues with a soft spot to the left of the drain on a 29M?