Tail kink and breeding.....

One of my buyers accepted delivery today of the animals he purchased from me. They arrived safely but one of the animals, according to the buyer, has a tail kink at the very end of his tail (no where near the vent). I had checked my animals out very thoroughly and never noticed any kinks etc. Obviously, this has to be very small if I did not notice it.

Anyways, he is going to take some pictures and email them to me as the one pic I have here at my office does not show any kinks etc. So, my questions are this:

1) Is it possible for a tail kink to occur in transit?
2) Would a tail kink interfer with a males ability to breed if it is at the very tip of the tail?

Obviously, I want my buyers to be completely satisfied with the animals and will most certainly refund him the money should he request this. I encouraged him to do some research and then let me know his decision. So, I thought I would do some of my own to better educate myself on this.

Any thoughts? Thanks!

Griz