irishrose,
Your MW should take a Class 15 bobbin case I think. If so then Sew-Classic has them. I've bought bobbin cases from her for a couple of our machines. They work good. They are actual Japanese made rather than Chinese.
irishrose and Charlee,
Thanks for ID'ing the 66 feet. Now I'm all set if I ever get one with the back clamp system.
Joe