I got a great deal on an upper model Monarch on eBay. Couldn't believe I won. When I got it, I had it bore-sighted at the local shop and he told me the elevation adjustment didn't work. Needless to say I was ticked off. The eBay seller said he would give me my money back, BUT I got smart and sent it to Nikon instead.
I registered online to be able to check the status of the scope, etc.
Long story short... in about 10 days, instead of getting a repaired scope, I got a NEW identical scope that worked fine! I'm loving it!
Guess that tells you what I think of Nikon's customer service.