Banding on neg

Hi, here a question to those who have printed many meters of digital negs. I'm printing from a 17 inches Pictorico roll with an Epson P5300, and Im getting random banding lines printing head oriented (To me looks very much like a feed issue) I've performed head and feed alignment, without much success, then I'increased drying time to 1 second, platen gap to widest, print quality to highest and slowest, back tension to normal, suction 0. But I'm still getting banding. Any suggestions? before I give up on digital negs

Are you printing bi or uni?