I know a lot of people think one should not do an AF fine tune, but I'd like to suggest you consider it. At least analyze a bunch of your shots, and see if the focus always seems in front or behind (for a give focus point).
I just got a 200/F2, also an extremely sharp lens and one well known for working with a TC. Out of the box it was softer than my 70-200, except it wasn't -- it was just focusing in the wrong place.
I did a very careful fine tune. On the D800 I needed a +10, on the D4 I needed a -7. Now it is sharp enough to hurt you.
It's always a can of worms, some will tell you if you need to fine tune "send it back to Nikon". But the D800, with people viewing them 1:1, you are into low-tolerance photography. Anything that's not off shows up magnified.