Had another scope sh*t the bed today. I already had two boxed up to ship back to Leupold. They will ship out tomorrow. Today I had a Nikon that quit adjusting. The elevation knob turns and clicks and sounds good but the reticle just does not move. It is very close to the optical center too. My 100 yard zero is the pretty close to the optical center. I adjusted 4.3 MOA to shoot at 300 and it was right on. My 600 yard dope is 17 and I adjusted and shot that and just impacted the berm. After futzing with it for a while I tried adjusting while looking through it and you can clearly see that the retical moves for a ways and then just quits moving. It is very repeatable. It ended a nice day at the range. It is just unfortunate because this is the third scope failure this year for me. This is getting old. How is Nikon's customer service?