My Epson printers will not print anything but an 8 X 10 in Mountain Lion. The 4900 will not center the image but the 9600 will. The computer is outputting a pdf to the printer driver. Does anyone have any suggestions on this issue. I have tried Adobe but their customer service is anything but helpful. Epson Pro Imaging has been through everything with me and it seems to be in order. I could print just fine until I purchased a new Mac Pro with Mountain Lion on it.