Thanks for your responses guys, I've had this scope for a long time, this was my first one of a couple. I have never had a problem with it before, it has seen thousands and thousands of rounds. The problem that I seem to be having is hard to explain, it seems like I can get the center of the scope focused but then the outside 1/3 is not and vise versa. It's strange. I wouldn't hesitate to buy another one. It has been my favorite scope for years, and the proof of that is, it rides my workhorse.
Mike