I have a 3-9x40 Simmons Prohunter rifle scope on my .243. Well, on 3x it is pretty good, you can see through it and everything but when I crank her up to 9x(or anything above 5x for that matter) you can' t see a darn thing. It' s all blurry and such. What could the problem with my scope? How do I fix it? Any suggestions appreciated..