Installed left partial rib and made up vent line. The vent line instally in some plastic bushings and you need to make a flared end to fit into the fitting. Pretty straight forward and I purchased a Parker Rolo-Flair tool to make the flared ends. Nice tool and easy to make nice flares. Also began riveting the ribs into the right tank. Once more day of assembly and I should have thee right tank to the same level of completion as the left.