Bought a WOTAC 4-14x50 off of another shooter and have yet to take it to the range, I looked it over when I first got it and didn't see anything wrong with it, but now that I have been looking through the scope more and more I've begun to notice that there are very tiny little black dots mainly on the outer edge of the reticle, is my scope broke or does it just need some adjustment to get the reticle nice and clear?