I've acquired a middle model Conshelf XIV first stage with 3 LP ports and 1 HP port. With the HP port at 12 o'clock, the LP ports are at 2, 4, and 6 o'clock. I came across an older thread where it was suggested that this port layout was prior to the standardization of SPG and inflator on left, primary and secondary on right, and worked best with SPG and primary on right, secondary and inflator on left (at least for modern BC), and with the secondary on the left, it would lead to easier use of the secondary by a separate diver. Of course, with primary donate, the secondary becomes the primary. and the primary the secondary, so to speak. I gave this a try, with the SPG on the right, the bungeed secondary on a short hose on the right, the inflator on the left, and the primary on a long hose under the left arm. I have a swivel on the primary, so it seems to work out. It's just looks a bit awkward having the primary long hose run under the left arm, under the inflator, and then crossing across the midline a bit to the right (even with a swivel). Is this a failed experiment? My other Conshelf XIV has 4 LP ports with the additional port at 8 o'clock, so it's easier to set up the standard way.