Often there is a 1/8" ID line from the filler neck for a vent that ID is too big and allows for gas to run out on hard left turns. A simple fix is to loop the hose up to the underside of the fender wheel well. Then, drive out the " nail " from a small pop rivet, collapse the rivet until there is just enough opening to allow a slight amount of air to pass through it. Insert the rivet into the line near the tank neck , this reduces the vent ID equalizing air pressure in the tank but will not permit gas to run out.