Digital BW, The Print

Hello.
I've used piezography Icc my old epson 1200 and
,exept the  high price of the inks, everythings worked fine and the 
prints are beautiful.

Now, I'm trying VM-MIS inks and i'm having a lot of problems.
The prints have too dark blacks. I follow all the instructions as 
written in the site but I still have dark prints.
Does anyone can give some advice?
I need a help . I use the right curves for my printer and the right 
settings but somethings dosen't work.
Thank you...
Sari