I mounted a vortex scope to my rifle. Centered up the windage. Bore sighted. Adjusted the Leopold rear mount screws to center windage. Afterwards I noticed the rear ring is about 1/8" left of center to the base. I spent half an hour counting clicks on the scope to verify scope was centered. When I shotit the rear ring needed moved over another turn more. I think the scope is screwed up. Is there some way the aadjustment cap is limiting adjustment? Should I send the scope in?