Thanks for the additional information Ron. I’m glad to hear your cyan purge sheets aren’t coming out cyan colored anymore, so hopefully the new ink has made it’s way to the print head, and printing pure (not still mixed with some old ink).
What version of QTR Print Tool and QuadTone RIP are you using?
Yes, it sounds like you’re checking the linearization correctly. Are your linearization checks both coming out similar when printing thru the custom and canned VFA curves?
Please let me know, thanks~ Dana