Digital BW, The Print

I've noticed that Eclipse Satine Bright White yields a somewhat 
cooler print than EAM (as well as a bit lighter).  Paul's 
instructions regarding adjusting the tone are to adjust only the 
yellow slider on a 4 color printer.  However, in a file 
called "roarkcurveadjustment1" there is a paragraph that explains 
that the toner has the same density as the lightest gray and that a 
curve adjustment to the toner should have a corresponding offsetting 
adjustment to the non-toner light gray (magenta in 4 ink set?).  

My question is whether you need to offset the toner slider by an 
equal and opposite adjustment to the non-toner light gray in order 
to keep the same overall density.  

Andy Unger