Hi, I have just had a frustrating experience with trying to print on one of a special pre-cut box of 25 sheets of 11 x 11 inch Red River Palo Duro Etching Paper for a submission to a show. Earlier this year I had found out that the P600 would not accept anything smaller than 8-1/2 x 11 in the fine art tray, and I remember asking Epson if the tray would take larger sizes, they had told me it would, though I can't find the email - perhaps I called or messaged them. However, when I input the 11 x 11 size, I could only use the "Poster Board" setting and the machine directed me to close the back fine art tray. The print came out with a thick line across it. Maybe I could solve this by moving the machine away from the furniture, but is there a work-around to this? I see there is a 12 x 12, and an 11 x 14 fine art setting, as well as such odd sizes as 10 x 14 (does anyone sell that?) but I wonder if there is a way to "fool" the P600 to accepting custom fine art sizes. I've already bought a new box of 11 x 14 but I have 24 of the other pages left...I wish Epson would be more clear about what sizes the fine art tray does and does not accept! Thanks