Digital BW, The Print

Happy to say cloggs are gone, after a nights rest it seems to helped 
and is now working well. Start printed the 21greyscale on EAM with 
Pauls curves and sad to say it doesn't work. I get horrible 
crossover of inks, tested all the curves and the "best"(kind of) was 
the "w" curve. None of the curves are able to do a decent print. I 
feel I have to make my own curves from start. Is it possible that 
the printers are a bit different (European model to the US model)? 
The printed greyscales are not even close to be good. Any good 
advices for start making your own curves?

Regards
Soren