Wish I could help you out. I have a Singer 66, it was my great grandma's passed down to my Nanny, then me. My mom doesn't sew.
Mine was missing the throat plate, I found a very reasonably priced replacement on eBay. Maybe check there?
I know there's lots of very knowledgeable antique machines people here that I'm sure will have some helpful ideas for you.
Regards,
Kif