I put the gas tank back on yesterday and the tank is wobbling wobbling. The 2 bolts are tight and the rubberies are on. Am I missing something?

 

I had the same problem when I put my gas tank back on, so what I did was take a piece of hose for a radiator, the small hose, and I cut it down the side and slit it on the side of the gas tank near the bottom and put it back on, and that should keep it from wobbling, do you understand what im saying?