I put a Leupold VX II (2x7) on my Savage 99 (250-3000) Adjustments left to right are fine but up and down not enough movement. I was told I need to shim the base, but I have a low set on rings on it. If I were to put a higher set of rings on it would this cure the issue. I was using a Bushnell bore sight also. Any help would be appreciated. Thanks.