I just purchased a set of MILLET extension 1" rings with the angle lok adjustments in weaver style. I noticed when geting them out that on the clamping screws instead of one, they have one on each side that in my mind would have to be tightened the same amount on each side or else there will be a little difference and they would put your scope canting to one side or the other and off. How do you install these the proper way to make sure they are dead centered and your scope is centered at 0. Thanks for the help.