Thanks to all of you who have helped with good advicea along the way.
My d800 is at Nikon for the fourth repair attempt, and it's already not going well. Repairs one and two were for left focus. It came back front focusing, bad. 11 inches or so at 5 feet, using a 24-70, and several other Nikon "pro" lenses. All exhibit the same behavior. Except for the 105, which is close to dead on.
I sent it in a third time and it came back with no change at all to the front focusing. It is very, very soft, it's the focus point well in front of th subject.
Now Nikon states that the camera is in spec, and my lenses are all bad. They said they're shooting with my camera in their office and it appears to be functioning correctly. I need to send in my lenses.
Today I hauled all of my lenses to the selling dealer, and all of them are dead on.
Now, I'm stuck. I'm already dealing with corporate customer service. They refused to replace the camera.
Any suggestions on what to do next other than cut my losses?