Joe I see your name on a lot of these questions so I am hopeful that you can help me out. My brother gave me a singer
machine. It says "99-" with AM266551 on the little plate on the front. When you lay it back on the wooden base you see Simanco USA 33611F on the base of the machine. I would love to find out any information about it . I am not even sure
I have threaded it correctly. Can you help??? Thanks, Joyce