It seems that all of the sheet papers I'm trying lately are not flat enough to get through my printer without problems, except for EEF. Both the Hahnemühle FAB and the Harmon Gloss FB AL have just a little curl at both ends, and even with the 7900 and 11880 suction maxed, it curls enough to miss the bottom exit guide and jam. The head hits the edge just enough to leave a ink smudge. Trailing edge also a problem.
My only thought is to try and de-curl the ends with my d-roller, not sure if this would damage the surface. Anyone else having this problem that has found a solution?