Digital BW, The Print

I am now more confused.

I improperly ordered a set of MIS FS (cone) instead of the 'E' (epson) hex inksets for my 2000P.

When I called yesterday, the information I received said that only the PC and PM needed to be replaced.....

But, when I did a CMY to BW conversion, I obtained densities of
C = 30 %
M = 68 %
Y = 7 %
B = 100 %

From the non E FS hexset, I have inks with densities of

B = 100
C , PC = 25 %
M , PM = 7.3
Y = 3.4

So, the Cs and Ms are mislabeled, there is a nonproportionality between ink density and printed shade and the PC and PM for the Epson set will then be perhaps 15% and 5% ???

This is getting challenging ...