I don't think I posted this here before, but I made a standalone macOS app for the K3 inks that is possibly the best and the easiest system for the K3 inks. I took all the guesswork, the math, the ink descriptor text file stuff and threw it out the window. Its been out about a month or so, and people have been saying they go from nothing to perfection negatives in less than an hour.
Here's a link with screenshots and the older excel version for windows people.