2016 221RBS #2 Graytank wont drain.
We used our 2016 Vibe 221 RBS for the second time.
When we were packing up both greytanks read full on the control panel.
When I drained them I thought, thats not as much water as I thought.
Then check the panel and it says tank 2 is still full.
Is it more likely the gauge is bad or the tank wont drain for some reason.
Any help appreciated.