QTR-Quadtone RIP

Hello,

I need some guidance to improve my QTR curve creation.
I succeeded in making a nice, neutral tone, 21-step
tablet. I used K6 qidf file for the 7500 printer which
I changed to fit my R220 printer and inks.

Here are my MIS UT1 ink setup in the Curve Creator
with lot of guessing:

Printing Model - Quad 1200
Default Ink Limit - 70,  Black Boost  -  100

Ink Setup:

No Ink Limits

K - Gray Ink  - 100
C - Gray Ink  -  47
M - Toner     -  6,6   Blue
Y - Gray Ink  -  14
LC- Gray Ink  -  32
LM- Toner2    -  3,4  Light blue

Gray Curve:     10   10   Gamma 1
Toner Curve:    10   10   Gamma 1
Toner Curve2:   10   10   Gamma 1   

After the linearizing, I printed the final step
tablet.  The  tablet was flooded with the ink in the
100% area, it is neutral in tone, very even gradient.
Really, I am very proud that I, as a beginner, could
accomplish something like that. 50% density is 0,61,
but 100% is only 1,57. I don't like that, because,
when I printed through the QTR without the curve, I
got Dmax 1.68 on the same paper. I guess the toners
are diluting the ink in the 100% area. Your help here
would be very appreciated. 

Best regards,
Kemal