So I've seen a recent Vector III (built Dec '12) where the main closing loop comes from the bottom of the tray -- or more precisely, from triangular webbing at the junction between main and reserve trays. A new option perhaps? Or has it been around a while? For so many years it seemed that UPT was dead set on having a bottom-flap based closing loop only, with their very specific 1 5/8" length. The current manual, 2010, says nothing about the new method. Companies are always ab