I have a Leupold 2.5 - 8 Vari X 3 scope (duplex reticle). Lately I've noticed the vertical cross hair (in the upper half of the scope) has a bit of a lean compared to the rest of the scope hairs. This is something I haven't really noticed before. The scope is mounted in Leupold one piece mounts and rings on a 30/06 Rem 700 mtn rifle. The scope is more than 15 years old.
What causes this? Is this an age of scope thing that happens? Could initial over torquing the rings have eventually lead to this? If I back the torque off a bit on the rings could it return back to normal or should I just leave it alone?
I realize I could send it back to Leupold but is there something I can do to rectify it?
