I finally got a look at it again this weekend after some of years. Lo and behold they are vertical split rings. There went my shim idea. I completely forgot that.
You shouldn't have been putting shims in the rings anyway. Shims belong beneath the bases.
Mathman that was next option at that point. Thanks for chiming in - I will go that route if ever needed. Glad I never touched it.
I am concerned that the scope had to be so adjusted to get to this point but I am sure he won't ever take the caps of the dials. It works for what is needed and that is way better than the shape it was in when he first showed it to me.
ldholton- just curious- how thick is the metal on an 8 oz soda can?