Digital BW, The Print

Hi,

While new to the group, and new to BO printing, I'm an old timer with respect to photography, both film and digital.  Recently I upgraded my Epson R2400 to a 3880, and decided to dedicate the 2400 to black only.  Research on the Web led me to MIS, Paul Roark, and this group.  

Not being one to tip my toes in to test the water, I dove in head first and bought a set of blank carts and 8 bottles of ink (Eboni-6) from inksupply.com a couple weeks ago.  I've been getting decent results printing on Red River polar matte using Epson's ABW, but based on what I've read, can probably get better control using QTR.  I've even tried Blick's Arches Cold Press watercolor with ABW.  While the result was ok (a little flat), I suspect that QTR will help me there as well.

Now for my questions...  I've read the QTR instructions and a number of the articles by Paul Roark and Clayton Jones, but can't relate what I've read to the inks I'm using (Eboni-6, with extra EB6M and EB6LM for the LK and LLK positions).  Do I use the QuadR2400 or QuadR2400-K7 printer model?  Nowhere can I find a procedure for my 8-ink printer.  What QTR curves should be used with my printer/paper combo?  Do I need to create my own curves (..I tried, but my "ink separation test page" came out quite dark for all channels with the RR polar matte paper)?

Hopefully someone out there has a similar setup and can offer some advice.  

Thanks,
-len