QTR-Quadtone RIP

I use Mac OS X (Panther), an Epson 2400 ans Silver Rag.  I do not get neutral / cool tones 
in my B&W prints, My prints come a bit greenish (very reminicent of the old Gallerie B&W 
paper for those who have used it in a wet darkroom).

I have tried all sorts of combinations using the blend mode but no success in getting 
neutral tones.  I use the Lustre Ilford curves which are provided with QTR.  

Does anybody have the proper curves for the Silver Rag, and how do we load them into 
QTR?

Thanks for any help