QTR-Quadtone RIP

--- In QuadtoneRIP@yahoogroups.com, "John Vitollo" <jvlist@...> wrote:
>
> --- In QuadtoneRIP@yahoogroups.com, "mmcouvie" <mmcouvie@> wrote:
> >
> > I am using an Epson 4000 with Ultra Chrome ink.  
> > For Ilford I have tried the curves:
> > 
> > UC-IsSmooth Pearl - Carbon
> > UC-IsSmooth Pearl -Neutral 
> > UC-IsSmooth Pearl - Sepia
> > 
> > UC-EEnMatte -Cool
> > UC-EEnMatte - CoolSe
> > UC-EEnMatte - Sepia
> > UC-EEnMatte - warm
> 
> The factory black/gray inks in the 4000 are not neutral but are a pukey green/yellow tone. So you gotta add color inks to the mix.
>
How do I add color inks to the mix?