I was using needle 15. I kept having thread breaks every 15 to 30 seconds. I replaced the needle, the rubber thread roller; checked the bobbin area for loose threads, everything except replacing the red feed roller (don't have any) and still had breaks. I switched to another needle and now NO problems - NO breaks. Does something need to be replaced on 15? How can I tell? Thanks - Lou Lou Frazier, President In House Specialties, Inc. 109 SE 1st Street, PO Box 1093 Pinetops, NC 27864 (252) 827-5480 (252) 827-4033 fax pad printing, screen printing & embroidery professionals