Dear Chick, cut away the plastic foam seal at the top of the filler pipe and all fueling problems will dissappear. That includes premature shut-off, burping gas out after filling, and getting gas into the charcoal canister by over-filling. I did that to mine, and no more filling problems. A little gas fumes into the atmosphere is better than spilling a couple of gallons on the ground! I know, that wasn't your problem but it happens to some people when the nozzle doesn't shut off soon enough and the bladder gets over-expanded. You're welcome, Jaan Tabur