Digital BW, The Print

Hi, I am fairly new at this forum. I downloaded QTR and have run some 
tests and have been pleased with the neutral tones I can get as well 
as the absence of metamerism. However, I am having trouble getting the 
deep blacks I got when simply printing through PS CS and the Epson 
2200 driver. I have played with the sliders in the gui and I have also 
tried adjusting the image itself to make sure I have absolute blacks, 
but I have not found the answer to the problem. It's not that big of 
deal for some subjects, but when there are large areas of black within 
the image, the blacks themselves become part of beauty of the image. 
What am I doing wrong? Are you able to get the same rich blacks with 
the QTR or is it a function of not mixing colors to create a black as 
opposed to the just the ink in the black cartridge. I am using the 
papers that are already calibrated in the program and UC inks, with 
matte black. (I am printing on Entrada, and Epson Watercolor)

Any help would be greatly appreciated.

Michael Fulks