Well, I was using a recommended paper setting(premium luster 260)but still changing platen gap to wide to avoid head strikes. No need to do that! I originally thought that thicker paper always required platen gap adjustment. Not True!
It is usually caused by software or media setting when horizontal
but, this issues goes deeper than that. We got banding using different Epson paper and using their profile. He also noted that text was not crisp, so he changed the print head and cleaning unit.