I got the gas tank mounted tonight. The stainless steel straps were a big pain. I had to straighten and reform the rear end part. They were bent too tight and it was impossible to insert the straps in the slot where the bolt is inserted.
After looking at the filler neck its clear that I need to make a bracket to support the filler tube. The rubber hose and two clamps are just not good enough to support the filler tube. The green line shows how I plan to make a bracket for support.