I was trying to wind a bobbin using this odd sized spool of thread. I've always had trouble with these things. There is a big hole in the bottom and that small hole on top. I came acorss this solution and I thought someone else might be interested.
I used one of those big straws you get at the take out places (a clean one - hehehe) cut it in half and it fit right over the top of the extra spool pin. The spool is seated well and works perfectly.