Next step for me would be remove everything from the rifle, center the reticle on the scope, and re-mount.

If you have a small square, you can check the mounting hole alignment when you take off the rings. You could check the rings the same way.

I have mounted well over 200 scopes in the last 10 years or so. I have never found a bad Talley ring, but I have found 2 rifles, one lower priced, and one very expensive, that had the mounting holes drilled slightly out of square. Both rifles were replaced by the manufacturers.