I have a Janome 1600P and have quilted 4 quilts so far using stippling. The last one (and the one I'm currently working on) have not gone so well. The thread keeps breaking and is such an aggravation. I even had it worked on by a Janome dealer and it did one strip very well. When I turned to go back the other way, the thread started breaking again. I have a GMQ Pro Grace table. Hope you have better luck than I have had. I am not familiar with the Pfaff.