Digital BW, The Print

I'm using an older g4, photoshop 7, and an epson 1280 with ut2 
inks and eboni black on Hanemuhle Photo Rag. I'm using Paul's 
neutral curve, modified to a warm charcoal as opposed to the 
cool tone it typically delivers. My results are inconsistant. In 
general though, prints seem substantially flatter, blacks less 
black, and less detail overall than the same subject printed on 
my 2200 using Ultrachrome inks. 

I'm putting in a contrast adjusting curve that helps somewhat, but 
that's not kicking up the blacks, and in fact it's driving some of the 
zone 3 and 4 stuff darker than I'd like.

Any ideas?

Mike