Fresh Water Tank Fill problem

[Tiffin GH1]

Hi I am new to this forum. I bought a Tiffin 2026 GH1 4- weeks ago. There was 2- damaged interior door panels that Tiffen replaced from Mercedes and I was set to pick it up finally last week....or so I thought. I received a call that the fresh water tank was reading 55%. Last week Tiffin instructed the dealership (NIRVC) to replace a sensor, which they did. Still have the same problem so they reached out to Tiffin a second time and Tiffin sent diodes. Diodes replaced and still same problem. After repeated called to the dealer, I was told today it is still not fixed and they do not know what the problem is. Also that this problem is showing us in several more 2026 GH1's. Have anyone who may own one of these had this problem and did you get it resolved?

Thank you for your time