OneByOne and Sewing Pup ... Following up on your comments regarding machines set to specific threads. Yes, it is true. After I got my Bernina back the one time, I complained the tension was all wrong. I was asked what thread I was using. Aurifil. From then on, I sent Aurifil thread on both top and bottom, with a note for him, asking for the machine to be set for that thread. Yes, from then on, it came on with good tension, with my mainly used thread. Otherwise, then, I adjusted tension accordingly, if/when switching to other threads.