I think we should give Nikon support some credit when they do things right.
I finally sent my D750 in to have the banding fixed. Yes, I could reproduce it easily with my camera. Also, the inside, especially the sensor, was filthy due to an error on my part.
I printed the shipping label, dropped it off at my UPS store on Monday and is was back on Friday. I live in N.J. and it went to Melville, N.Y., and UPS moves packages very efficiently where I live.
The camera was fixed, adjusted and thoroughly cleaned at no charge. It seems almost as clean as when I first received it. So maybe add this email to the list of “They did things right this time.” (bb)