Is your Designer SE under warranty still and if so, I'd take it and have them repair it or replace it. I bought the Ffancy Quilt bobbin winder years ago and had them make me a separate spindle just for the Viking green bobbins. Since my bobbin winder still works on my old D1 I haven't bothered to use it. I found that my bobbin winder that came with my Innova machine will wind my Babylock and my pre-wound Neb bobbins so if and when my Viking winder goes south I can still use the empty Neb bobbins till I can get it fixed.