Every time I change threads. Every time I change bobbins. Seriously. This shouldn't be so difficult. So frustrating. New quilt. Using Rainbow (Superior) and it breaks on top after just a few stitches. I've re threaded. Re needled. Alternate threaded. Cursed. And started all over again. Is there a simple way to get this to work? Millennium. Delivered in September . Less than 10 hours on. Have actually completed three quilts on it with relatively satisfactory results after much frustration. New quilt. Tension frustration has returned.