D800 Left Focusing Problem

It's pretty simple and easy to test this defect of the left focus point of Nikon D800. Within 2 minutes, you should be able to identify the problem. My setting is as follow:
-Use FX wide angle lens (mine is 35-70mm F/2.8). Use focal 35mm or wider only.
-Select Aperture 2.8 (Aperture priority)
-Set speed minimum 100
-Set ISO below 3200.
-IMPORTANT: select the SPOT focus mode (first option on the switch next to viewfinder)
-IMPORTANT: select the left most focus point in the middle of row of the frame
-Chose any paper with small text that you can read or camera can focus.
-Use viewfinder (phase defect is more prone to this focus problem)
-Set camera 3 ft away and shoot, handheld is fine.
- You can see the blurry pictures on the screen camera where you chose to focus.
Take more pictures with other focus points, center and right, on the same topic . Then compare and make your own judgement. That's it.