Thanks for the update John.
The PZDN-Meth3 and P2 matte system you're using is only packaged with Selenium inks, because that's what the PZDN curves were designed with. I see you purchased all the items individually, and are mixing shades 2.5 and 4.5 by yourself. In your case using Warm-Neutral inks, I suspect the P2-WN curves would give you better results for regular matte printing. If the linearizations look decent, then go ahead and use the pre-made P2 curves, but if you want to print on other papers, or aren't totally satisfied with your results using our pre-made curves, we can make custom curves to optimize output for your specific setup.
Best regards and happy printing~ Dana