Digital BW, The Print

To sidetrack a bit from this thread, I've read the C88+ Carbon 6 PDF
and I don't understand the ink mixing procedure.

"the single 13.5% mix is very smooth"... does this mean this workflow
uses only two black inks: 100% Eboni and 13.5% Eboni (mixed in the C6
base) ?

It appears that the EZ inksets use 100% black and 3 dilutions. Or
maybe I'm wrong.

So how many ink dilutions the C88+ C6 workflow uses? And in what
printer positions (YMCK) ?

I'd want to run one of these non expensive printer full time in BW in
parallel to the larger R1800.

Many thanks,

Denis Bouchard