Digital BW, The Print

I have the MIS UTR2 inks installed in an Epson R220 using the 
variable tone set as described by Clayton Jones in this article 
http://www.cjcom.net/articles/digiprn10.htm.

Works perfect on Epson Enhanced Matte, but if I try and use Photo Rag 
308, I get micro banding in the midtones and shadows.  I have tried 
cleaning cycles and head alignment.  I have dried 360 dpi, 300 dpi 
and 240 dpi.  I have also tried printing with the Epson print driver 
set to all the various paper types.  Some settings band worse than 
others.  In one case I could get rid of most the banding, but at the 
same time, the image was very washed out.

What else can I do to try and get rid of the banding?

If I want to try a different dither pattern, can I use QTR with this 
ink combination?  If so, I am not familiar with how to set QTR up to 
control this ink set.  

Any recommendations?

Thanks!