My 6 gal portable o/b fuel tank leaks around the swivel fitting on top of<br />the tank. It seems to do this when internal pressure builds up. Even<br />opening the screw down vent doesn't give enough pressure relief to prevent<br />the oozing fuel around the swivel fitting.<br /><br />Is this an operator problem, or do I need to get a replacement tank. Any<br />particular ones to stay away from?