85 1.4G front focus, need advice please.

Hi, I received today the Nikon 85mm 1.4G that I ordered. It seems to be a great lens, but mine front focusses a lot. I had to adjust the fine-tune to +20 on my D700 for close objects. But if the object is more distant (30 ft and over), I have to turn off the fine tune because it's backfocussing with the +20. It's VERY annoying.

The problem is the lens because it also front focusses a lot on my new D3100.

Did someone else had this issue with this particular lens? What would you do? Pay the shipping for an exchange at the store by mail, or give it to Nikon for calibration? or just return it?

Thanks in advance for your input!