Please keep us posted on this as I have the same problem. I'm also experiencing a minor version of the left focus point AF issue so I feel i should send it soon, but I don't have a lot of confidence in Nikon Repair in Melville. They recently botched a repair on my 17-35 2.8. I've had to send that in twice. I can't be without this camera for weeks and then find out it's not even fixed.