Are there any ways to control the LPI with this printer and RIP? In the creo itself the only options seem to be dot 1, dot 2, line 1 and line 2, without any control on the LPI. And if I try to set a LPI with the PPD using for example adobe software, the creo seems to override the LPI values I enter and do its own screening. Maybe my understanding of the whole thing is not good, any explanation or help welcome