Has anyone had any issues with a scope appearing to be foggie when viewing the target? I have three of the same scopes in 20x42 fixed and the newest one is not clear when viewing over a 100 yds on a over cast day. All three are on rifles with Bi-Pods and I can compare each at the same time without having to move either. Two are very clear out to inf. the other is so bad that the fog will blot out a 1 inch dot at 100 yds. If comparing them in bright sun light it is not as bad. I called where I had purchased it yesterday and they said they would take a look for the cause and that they have had no other issues like this. what do other think?