The Burris zee rings use a plastic insert that rotates in a cam groove (not sure of the correct terminology) which allows slight offset of the bases without any binding on the scope. Simply assemble the scope to the rings loosely, mount and torque down the rings to the bases, adjust the scope position and then torque the ring caps down. If you need to adjust the windage on the bases, simply loosen the ring caps to unload the pressure on the ring inserts but keeping the scope held in place, adjust the windage in the base, then retorque the caps before you fire your confermation shots.