I have a Bernina 730E. While using the BSR when free motion quilting, I had eyelashes when I rounded a curve. I called my Bernina dealer, he said it was because I was going too fast around the curve. My machine is usually set on 3.0 stitch length and 4.50 tension and use Organ needles size 14 for quilting. I buy them online, Missouri Star Quilt Co. There is a horn symbol that can be selected on my machine and only shows up when the BSR is plugged in. It shows up as red on the screen, when selected it turns blue. It bleeps when you're going too fast when using the BSR. Also, if you have the bobbin with the pigtail, you may want to try that. It's for quilting and embroidery, but I don't find I need it for quilting.