I have been the "proud" owner of a Boss for about 9 months now. I have been through the DVD MANY times, followed the directions. Adjusted the foot tension from removing the adjuster to down to the point of running out of threads. Just about wore out the adjustment screw on the bobbin adjustment, same with top thread adjustment. It will sew maybe 100 stitches then break the top thread on the up stroke. Rethread the machine, might do 10 stitches, might do 200, then preak the thread again. Constant change in the stitch length. Do 10 stitches and then the bobbin thread is on the top. do another 10 and the top thread is on the bottom. I would not recomend this machine to anyone. As soon as budget permits it is going on ebay, and the money from that sale will go on a good machine. Not impressed, I think it is a POS. But just my opinion.