QTR-Quadtone RIP

I'm just starting out with QTR. I use it to print on Epson Enhanced 
Matte Paper and the prints are way too dark for all 4 choices: cool, 
cool selenium, sepia and warm. My printer model choice in QTR is 
Quad2200, I use one curve only and no Ink Limit or Gamma adjustments. 
I don't want to fiddle with the gamma setting, because I think there 
is an issue that I don't understand yet. 

My prints using the Epson driver match my images on the monitor very 
closely and are way lighter than what I get using QTR.

A post from last year suggested to assign a QTR profile to the image 
file before saving as tiff but a) I can't find QTR profiles to 
download from the QTR website and b) I would think that by choosing a 
curve in QTR it has all the information necessary to print correctly, 
including tonality.

Can anybody help me with this issue?

Thanks,

Frans Waterlander