Digital BW, The Print

I am getting only Sepia (w6 Curve) tones regardless of which Roark curve 
(VM 27-w6, mw6, nc6, and c6) I use.  My settings are: a) Color Settings - PS 5, 
b) sRGB,  c) PQIJ, d) 1440 dpi, e) gamma 1.8, and f) Enhanced Generations 
Black ink  from Media Street.  I have previously used the QVM inks with no 
problems.

What am I doing wrong?

thanks, 

Martin