Digital BW, The Print

Hi guys - I guess this is a question for Paul.

I have a 1280 set up with UT ink (using the Photo Black)

I just tried some prints using the new curves and lustre paper.

My settings:

Color Space: Adobe RGB
Res: 1440
Curve: UT80-N
No Color Adjustment
Photo Paper setting

The print was bizarre - pure toner in some areas, pure "yellow" (warm grey) ink in 
other areas, highly posterized. I am getting perfect nozzle checks, no banding. I'm 
clearly doing something wrong, and I know the curves were designed for EAM, but 
they shouldn't be _this_ far off for lustre stock should they?