Running a Xerox iGen 4 with a Creo rip. We have a client constantly bouncing proofs and printing elsewhere because of an issue we can't seem to solve. They build elements, such as a chart in Illustrator, CMYK file, they make a 10% black screen, and then place an orange rectangle on top of it, which is a cmyk build to make a light orange. When we print, the orange will not trap to the gray screen. which leaves what looks like a white stroke around the orange. You can turn on trapping and it does nothing, regardless of the width used. I am trying to attach a screenshot of how the file looks on screen, the orange and gray screen should meet, but picture it printing with a white stroke between the 2. Please let me know what other info I can provide to see if anyone has ideas.