I've been reading a couple of posts about the atx 50 dst ports and I'm getting more and more confused.. I've never seen this reg in real life so maybe that's why.. you have 4 low pressure ports, two on the left hand side and two on the right hand side. the two ports on the left hand side are the standard 3/8", one port on the right hand side is 1/2' and the other one is the standard 3/8".. you plug in your primary and your octo on the right hand side; which goes into which port ? or do you have to plug in one of them into one of the two ports on the left hand side and leave the 1/2" unused ? 
