So - my memory served me well, that you did talk about the Epson driver... it's in the very first paragraph of your pdf. I downloaded that when you first reported on this research. Some of it is over my head, but I do get the general idea. Apparently a sticking point is the availability of a compatible blue in bulk, as is Eboni, so we end users can mix our own neutral inkset. You're right, it is easy. I'm on my second batch, more accurately called Cb6 instead of Eb6. I'm using an Ohaus scale, which measures to .1 gram - I do 100 ml mixes and store it in 125 ml plastic bottles from MIS. The bottles are my tare weight.