I came upon some old USO rings while cleaning my workbench, got them on a SN3 from a long time ago. That being said I have a rifle and scope but no rings so I’m thinking of using these to get me by. I cannot find instructions on how to use them. Any input is welcome. I need to make sure that the scope isn’t off center on the rail so so I just screw in one side all the way down then mount as normal?