After upgrading the Power suppies:
1 Controller and 3 stand alones. Power 95, but I left Fequency at 54.
14.7 Th/s and 73 w/TH/s
Power supply upgrade resulted in almost a 25% increase in accepted Hash on my Pool.
I may have missed it earlier, but what PSU are you using?
And then just get one of the common slot adapters on eBay or Amazon, and lots of PCI 6 pin cables..