I have a Shark and when I try to sew fast the whole bobbin mechanism jumps out of place. Very irritating on those long straight stretches. If that wasn't bad enough, I meant to bring the Bernina home at Thanksgiving when we went to the mtns and plumb forgot. If it wasn't 5 hrs one way, I'd go get it! I like the decorative stitches on the Shark but this bobbin thing has me steaming too. So I know how you feel!