Color C75 Press with Integrated Fiery. Black prints using screens and halftones print blotchy. Paper primarily used is 60 lb. Husky (not a real smooth finish). If you output as "color" utilizing CMYK the print looks good, but if you print gray scale they are blotchy & blurry (uneven). Aside from changing stock, which is not really an option, is there anything in the print / Fiery set-up that can be changed to give us a better quality print?