I do have a question about my 15-91...
THe machine was purchased off of Craigslist and came with 2 bobbins - one metal and one plastic. The metal one works perfectly, but the plastic one is a hair too narrow, so it gets stuck in the bobbin winder when the foot presses down. My metal bobbin only has one hole in it and then the notch for the bobbin winder to fit into. The manual states that the machine takes 15 class bobbins, but all of the ones I see for sale have more holes in them than the one I have. Are those still the correct bobbins for this machine? Or do I need to be looking for bobbins with the one hole. Sorry if the question is confusing.
D~