Hi to all you old machine lovers!! I am a new owner of a Free no.5 that is in great shape! She is in a very nice cabinet that only needs shined up a bit. My husband took it apart to clean it by Billie's tutorial. Now, when he turned it up-side down a little steel pin fell out onto the table. It looks like a pin that Billie shows with the tension peices. Can anyone explain how to put it back in it's proper place? I thank you already and will post pictures when we get it back together.