^^the screws are there to hold it place, like a set screw. the base slips over the dovetail. i've had no issues with mine so far.
only things i can think of are:
mark the rings dead center with a pencil or sharpie, mark the receiver dead center. count the amount of clicks it takes you to get from out of click adjustment Left to all the way Right, divide by 2 and click back to that answer to find the center of the windage adjustment on the scope. start with one side of the windage "arms" bottomed out on both rings, and count how many turns it takes to match up the center lines on one ring. then back off the other ring the same amount - it should match up with the center lines with the same amount of turns of the ring's windage arm screw. this'll get as close as you can to not bowing the scope tube left or right once tightened down.
or measure from one side of the ring "column" to the other side at the dove tail, then measure it the other side and make sure the two distances are the the same as you tighten the ring down. then do the same to the other ring.
even counting the number of times you unscrewd the windage arm from bottomed out on both rings should get you close enough to eyeballing where center is. you should have more than enough windage adjustment on the scope from there. but you want to make sure that you are not bowing the scope with misaligned, twisted, or offset rings. hopefully you have a length of 1" pipe and the rings / scope is 1", mounting the pipe in the rings will help with making sure they are in line with each other.