Has anyone stacked 1000 gal propane tanks? I am kinda worried about the weight of the second tank on top of the first tank. I was planning on welding saddles to the tanks and welding them to each other. I have just enough room to do this where the tanks go and have about 4-6" above the top tank. I was thinking at least 4 saddles and making them out of 1/4" plate and bending the ends. Thinking I will need the same 4 saddles for the bottom tank to make legs for more support than the factory feet. Figure on tank weight is around 1900 and 1000 gal water 8300 means that top tank is 10,000 lb or so. Thoughts?