Digital BW, The Print

From my limited experience with K7 (four months), I find the hghlights too light.  K7 has 
problems with high contrast images that have a quick transition from shadow to highlight.  
Even though the transtiions are quick they still should be smooth.  K3 has no problem with 
this but K7 does.  I'm wondering if anyone else has noticed this.   

I would like to see more ink thrown down on the highlights and midtones but Cone profiles 
are hotwired into QTR so I have no idea how to alter them.  Does anyone know how to alter 
the Cone profiles or are we stuck with creating our own?  I threw this question out at the 
Piezography list but no one could respond.  Ditto at the QTR list.  Maybe the luminarites here 
could shed some light.  

Thanks in advance.