Yeah..... I've had less than satifying results with jb weld. I've let it sit for days and the gasoline just eats it till it leaks again. I wonder if I can use a tank sealer without having to take my tank off. Bigbutterbean has suggested one called kream but I think you have to remove the tank to use the product.
I have also tried everything that the autoparts store has as far as epoxy goes. Even one that says its specifically for gas tanks. Rusults are always the same - it works for about a day before leaking and eventually completly peels off.