Digital BW, The Print

Hello Have a question 

I am using a 2400 with matt black installed, I use MIS K4 inkset with
their Eboni matt black.

I cannot get a neutral print using QTR no matter what curves I use.  I 
have tries several papers with the same results.

I can get a netural print by using a profile.

I know that Eboni ink is warm, I though that I could by blending curves
get a neutral print. Is this possible with the combo I am using.

Thanks in advance.

Ed