i finally got my 1976 280z to start again so i know it was a dumb choice to start then drain my gas tank i think but anyways i tried to drain my gas tank but the i cant unscrew the plug on the bottom its stuck i tried spraying wd40 rust specialty i think its called but it still wont budge then i tried using a cheater pole but nothing any suggestions? and the gas tanks straps are the same thing