2017 Thor Quantum PD31 - I continue to have water build up 1/4 to 1/2" in the storage garage - passenger side/under TV. I can see no area of leaking on the top side. Any ideas on what could be causing this? Condensation? Also does anyone know how to get your hands on a water line diagram of this model? No response from Thor Cust service. Any input would be appreciated..