Digital BW, The Print

Are these inks different, or is it just their positions in the printer that differ?

I'm not having much luck with the Roark curves and UT7 in a 2200. On the 
MIS site, they say that UT7 can't be used with QTR, but it seems that it's only 
their relative positions in the printer that differ, or are these pigs physically 
different. In other words, with proper re-chipping, is it possible to use the UT7 
inks in Roy's QTR workflow?

Additionally, from what I can understand, QTR can work with ANY inkset given 
proper profiling. Is this correct? Dang, I'm pretty good in a fume room, but I'm 
afloat in the great blue when it comes to my "digital transition".

Heeelllppp!!!

-Guy