I have a Mueller APV I bought last year. I adjusted the eye relief on this scope as per the instructions and now the whole scope is foggy. I didn't back the eye piece off very far at all. It was about the length of a thumb nail; 45 minutes later I climb up in my stand and I can't see anything through it. I've had the scope mounted on my rifle for almost a year. It was a very clear scope for the money I spent on it. I've looked all over for the original receipt, but no luck. I have the receipt for a multi-shot I bought about the same time. Will the warranty still be good? How strict are they on the original receipt??? I have the original box and warranty card. I need some help as this was my favorite rifle. Now it's parked until I get this scope fixed. Any help would be greatly appreciated.