Re: Fuel Leak
I recommend replacing a bad gasket before repairing it.
The best gasket dressing I have ever had the pleasure of using is Hylomar.
You can buy a cheap copy of it made by PermaTex in most automotive parts stores. To get the real stuff you need to find an aircraft parts and repair shop or on line vendor.
Aircraft Spruce is a good one.
I am sorry to hear that SealAll has failed you. I have never used it on a plastic gas tank.
"It's a chinagirl. It's a sometimes fun little engine that often will break your heart. It's disposable.
Does not come with a fortune cookie."