I had it happen to the fresh water tank on a mid-2000s Fleetwood Wilderness. It ended up riding on the axles, so it never actually fell completely off. It came with a sad attempt to support the bottom of the tank with some light gauge 1" angle steel. Unfortunately, the assembly monkeys ran out of the correct bolts and nuts to connect the angle to the mounts, and thought that 1/4" bolts would be fine. Turns out that they were wrong. They then supply the dealer with a replacement tank that's slightly thicker than ziploc bag. This piece of trash ends up ballooning to comical proportions when filled, and blew the spun welded supply fitting right off the top. The shop monkey at the dealer decides to repair this by using a full tube of silicone to build a huge mound around the broken fitting. This fails, and I have to let the monkey in on a highly secret piece of insider knowledge, that being, Silicone really doesn't stick to most plastics. Tank number three did the trick, and magically stayed in place for a few more years. When Fleetwood stock dropped to $.08 and they failed, I just smiled. Couldn't of happened to a nicer, more competent, decent, well run company, said no one, ever.
