The custom engraved dial has ball stops that allow it to turn 1 revolution. One revolution is 15 moa on that scope? The OP has 6 moa right now. What is needed to fully utilize the custom dial is 9 moa. This 9 moa can be provided by a beer can under the rear of his mount, or the zee rings using the off set inserts, or a 10 moa base.
It makes sense that
Big Z likes the Zee rings.