The 16 AWG wire from my gaming-rig worked great... Doesn't even get warm with all five cards blasting-away. But I had to also remove the kill-a-watt meter, because it has a limit of 15 Amps, and this is pushing 16.2 Amps. Even that was crazy-hot.

Any-who... Now it is running full-force, holding steady at around 1.26 THs at the machine-level. (Waiting for the Ghash.io hourly results.)

I shaved-off about 80-watts (resistance and heat-stress), by removing all the screws from the case, except the three at the back. I added a single 1/2" riser to hold the case cracked-open on the front-side. Also, I have cardboard air-dams, between the cards. This is just a long piece of cardboard that is folded to look like a "U". This forces the air into the cooling-fins, with excess escaping around the cardboard. The air now travels the entire length of the cooling-fins. The fans are a lot quieter now and the heat-sinks are cool to the touch.

All of the above, also included some wire-management, keeping the power wires across the top and the ribbon-cables all out of the path of air. Finally, each card was also removed, and the screws tightened. (Some were not just loose, they were half-way unscrewed.) Bonus for mounting one heat-sink compressed directly to the other, with micro-thin heat-transfer sheeting. I still have an urge to cut them in half, by height. I can fit ten cards and two PSU's and controllers in that case, easily.

Unfortunately, I do not feel "compensated" by the single unit. Sorry, but that is my honest opinion. That being said... It is also my opinion that you are "still" honestly trying to "do us right". (A few individuals being an exception.)

I should be back online and raising hell myself, soon. But, for now, I figured that I would take the time to post a few words. Lucky for everyone, I do not have hours to post replies. xD