Maybe the revised (2006) Boeing checklist design had something to do with the initial fuel tank faulty selection process. With the first officer now over-loaded with about 80 percent of the pre-start scans and other cockpit checks - plus he now has to read, challenge and respond to his own voice and the captain " managing by observing" while the first officer's hands are flashing all over the various panels, is it any wonder that occasional balls-ups occur. Most go unreported - after all no point in cutting your own throat..