I have I just checked my bobbin tension and got that set. I also just put in a topstitch 90/14 needle and it will only snap thread when I go right to left passes. I am going to pick up some larger needles like size 18tomorrow. I have used signature thread from superior and it snaps that too going in the right to left passes along the width of my quilt. I check my bobbin carriage for lint as well, that was clean. I hope I get this figured out soon or I will be bald! haha