YUK! to the gas over flowing that is. Sounds like you might have filled it a bit too full, or maybe the gasket is bad. Another thought, most gas has 10% ethonal in it, that may be the reason the gasket started to stretch out like a tongue, perhaps a new gasket would help.
You're absolutely correct, install an over flow tube (to the ground) and make sure the vent is working correctly and all the filler hose are tight.
Sounds like a good little weekend project ..a way to show your baby some love.
Bill
