Digital BW, The Print

Hi all - I have been testing Paul's LLk swap for yellow with
( -3, 20 ) and getting a nice warm-neutral print on Silver Rag that is
almost dead on to what I see on my monitor (without the tone).  So out
of curiosity I printed out a 21 step with those ABW settings and
measured it with a PFP Spectro and ran it though QTR's Create ICC.  I
then loaded that icc and printed with no color controls in the print
properties but the print came whacked towards magenta.  I might be
over training here, but I am not sure what I am doing wrong.  Has
anyone else had success with this?

Also when printing with these ABW coordinates it does not appear that
the LLK (Y) is being used very much.

Cheers, John