[Montana Man]

I would debate the idea that these tanks failed because they were overfilled. What is overfilled? 1/2? 3/4? While parked, or driving? Has Keystone ever put to print what constitutes overfilling? Has a dealer ever said don't fill the tanks? If they advertise a tank capacity of X amount, do they ever say only fill it to X amount? Is a tank's capacity how many gallons it can hold, or an amount that you should not exceed?

I have personally witnessed a tank failure at a dealership that just replaced that very tank. We tested it in front of them and failure occurred prior to reaching full. Two piece tanks fail because they are not installed according the (tank) manufacturers recommendations. Which in part includes support on the bottom. Keystone elected to ignore that detail and we are left to fix the problem.