Digital BW, The Print

I am trying to print "sepia-toned" files with not much success. I have 
an Epson 1160 with Generations 4 inks, an iMac with OS 10.2.6, using 
Epson heavyweight matte and Brightcube Satine papers. I have tried 
Adobe RGB as the profile, have tried "duotones," have tried a number of 
profiles in the printer driver. Nothing seems to work. Monitor is 
calibrated. Image on-screen looks great, Prints have some color in 
parts of the image- mostly in shadows- and the mid-tones and highlights 
are green/blue. Looks more like split-tone than overall sepia tone.
Any help would be appreciated. Let me know if you need more info.

Thanks,

Dennis Stein
Digital Imaging
Fine Art Photography
Web Design