I run reg Zee and Signature Zee on everything I keep
On reg Zee I still knock off the points of the rings, and when mounting check everything with alignment tools.
Seen folks use crap tools, or decent tools without fully monitoring the results. A good eye and systematic brain can use a reg 1" steel rod to satisfactory result.
Have seen a bad pair of reg Zees, and some Redfield/Leupold bases and rings that were off, as well as Ruger.
NEVER assume them to be perfect, check them first, with a tool or a Tasco