millet windage adjustable rings questions

[micmacman]

so i have a very nice vintage ES340b Mauser trainer that predates WW2 , i have a correct small arms Oigee scope for it ,but they did not have windage on their scopes back then , only option i could find were Millet 1 inch windage adjustable rings with 7/8 inserts , i havnt really done anything with it for several months because im not entirely certain how the rings adjust windage and they do not have instructions in the sealed blister pack , look very well made

im guessing you loosen one side of the claw and take the slack with the opposite side , i am also guessing that you must do front and back at the same time in the opposite direction as to not kink or pressure the tube , does this sound correct ? im just wanting to get my ducks in a row rather then cause a issue in haste , its a scarce rifle and vintage glass ,so i thought i would ask those that deal with scopes more than me

picture shows with a old weaver tipoff which was all i had on hand in 7/8 until i found windage mounts