QTR-Quadtone RIP

I am a relative newbie trying to figure out how to soft proof in PS2 printing to an Epson 2200 
with Inkjetmall's new K7 Split Tone inkset installed.  When I was using the neutral set, this 
was less of an issue, but now that tones have been introduced, I would like to be able to 
quage their impact before I print.  I have a profile installed entitled 'Lenswork' that comes 
close to matching what I am printing, but it isn't quite right.  I have searched the Inkjet Mall 
sites, the QuadToneRIP site and this group's archives, but haven't found any guidance.  (I also 
emailed InkjetMall but didn't get any response.)  Can anyone here give me some pointers? 
Thanks in advance.