Novajet 750 inkjet Printer Head Calibration

Hi all,
I have a novajet 750, i am having trouble calibrating the print heads, i can print images but i dont get clear prints as i can see small dots in white areas.

I have tried to change the vertical and horizontal values as this didnt change anything
here is a print out of the printhead calibration test and test page

IMG_0001.jpgIMG_0002.jpgIMG_0001.jpg

Attached Images

• IMG_0001.jpg (410.2 KB)
• IMG_0002.jpg (505.9 KB)
• IMG_0001.jpg (385.2 KB)