I've had minimal trouble w/ paper jams since starting to use a new Epson 9900, but have had nothing but trouble with one paper, Canson Platine Fiber rag. I generally use Moab Entrada in sheets and roll, but I'm testing Canson Baryta and Canson Platine Fiber rag sheets, both in 8.5/11 size. The Baryta runs fine, never a jam, but the Platine jams every time, not a single successful print yet. I am using each with the appropriate profile and Epson paper setting. The platine sheets seem to have more curl than the Baryta, so I've bumped up the suction a notch, but still no success.