Basement Floor Failure On 2013 Arctic Fox 990

I would definitely suggest that something was not done right at the factory. The way you fill the tank should have no bearing on what you are experiencing. I always fill once the TC is loaded on the truck, but even the way you did it should be ok. Many AF owners use their TCs off the trucks while camping and most have them only on the factory jacks. My guess is somebody forgot to do something right at the factory.