Wheel simulators, tire valve extensions and other questions

jjrbus and drewe:

Thanks for the tips. I googled the plastic welding online for the fix on the water tank. Looks like the better solution.

Now I need to find someone that can do that work, or a minimum, the supplies to try it myself. I am doubting a "rod" of polyethylene is easy to find locally to use in the "welding." Time is running out for shipping.