QTR-Quadtone RIP

Hi -

I'm working will all grey inks and want to use black ONLY for the densest of the dense...

I don't see any discussion of the BOOST_K= variable and am trying to get a good 
calibration but with denser blacks - I'm hoping that this variable holds the key.

If I set the black ink limits to 100 then I get a denser black but the calibration procedure 
seems to rely on having the ink limit set to the "paper coverage" point. I don't want to get 
a dull, lifeless black, I want to get a very dense black.

if I set the ink limit to 100 then the black percentages used in the calibration process 
seem to get very weird (they all come in at less than 50% - going down to less than 1%)

So, how do I get all the tonal range that is provided by a quad-black ink, but still get a full 
dense black with 100% or more ink covereage at 0,0,0?

Any suggestions?

Tom Stratton