As usual MR. Roy is correct. However, to answer your question you should set the scope in a shoe box(or similar) that has a "V" cut symmetrically into both sides. Then spin the scope, if the cross hairs wobble move them till they just spin with the cross staying centered. Make since? If not maybe someone else can explain a little better. By the way, what kind of scope is it? I have never seen a good scope's turrets spin till they loosen and maybe come off!
Courage is just fear that has said it's prayers.
The people trying to say the 2nd Amendment is outdated are probably the same folks that would say the same thing about the Bible.