I know this is not a PieozDN question, however, if anyone can help me with this problem I would appreciate it. I have a 3880 setup with Piezography K7 Selenium ink, I use Cone Type 5 paper, QTR and the curve for the Type 5 paper. This problem started over a year ago out of the blue. My ink is not out of date. Nozzle checks are always good.