I got a scope that has these spots when you look through it. When I focus on the crosshairs the spots disappear but when my eyes lose focus the spots appear. I called the retailer and they said these spots are normal even though none of my other scopes have such spots. I asked to get the scope serviced but I got the feeling that he wanted me to just deal with it, that it was common and acceptable. So whats the deal, is he right?