D800 - Can't get sharp images - focus woes

Talked to my dealer, who has been very nice in this process. They are willing to refund me the cash in full.

The servicecenter told me that Nikon declined further replacements of my D800, I quote:"The test you're performing will always have the same outcome".

So basically they're telling me that D800's can't focus properly using left and right side focuspoints.

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Best regards
/Jim