I ordered a refurbished D800 from Adorama that arrived last Thursday. Tested it with a 24mm f/1.4 and an 85mm f/1.4. The end result - the camera is being returned.
I am really disappointed in Nikon, to see a refurbished item (several QA Checks?) that has the worst focusing of any AF camera I've owned. And it was not not just the left AF points, but left, center, and right.
Out of curiosity I ran the 24mm with the D800 test images through FocusTune for AFC - Auto-Focus Consistency. The Live View focus images were about double the Sharpness Value of the phase detection images! I wished I had my original D800 to do a comparison with as it was the best camera I've ever owned including the focusing.