QTR-Quadtone RIP

Hi Folks,

Sorry if this has been asked previously but I searched the archives
and couldn't find the answer so here goes...

I'm using a 2200 with the MIS UT3D inks with Eboni installed.  I've
managed to stumble upon a "good enough" solution for the Lenswork tone
on EEM and PA270 but that's with the Eboni as the K ink. 

I'd like to be able to use the Costco Glossy too but without swapping
the black for PK.  I've spent way too long on this so before I waste
any more time is this even possible?  I've managed to get the LAB B
tone about correct from 0 to about 65 but then it dips and then goes
way up.  I can't figure out how to tame that last bit of shadow tone.
 Any words of wisdom?

Thanks,

Richard Cooke
Lake Forest, CA USA