Just a comment...I have had a couple of experiences where scopes would not adjust for elevation if one of the scope rings was located immediately adjacent to the adjustment turret. Apparently the scope was torqued or bent a bit because the rings were not in perfect alignment and the elevation adjustment froze. Actually the reticle would move a bit in one direction and stick, and was unable to move in either direction after that. When I moved the scope forward or back a bit to allow some clearance between rings and turret, all was well. This happened a month ago with a Weaver Grand Slam scope in Warne rings on a Knight KRB.
So, if by chance a ring is too close to the adjustment turret, there may be hope for the scope, so to speak.