I have worked on many vintage machines and got them going, but am not close to you. Do not use Tri Flo, it is basically 3 in one oil, and that is the problem with a lot of these old machined. It turns to shellac over the years. Always use a good sewing machine oil (Singer). Keep oiling and keep trying to move, some times it takes a few days. But get rid of the Tri Flo. Back in the day they used the 3 in one, as it was handy, and they grabbed it from their husbands instead of getting sewing machine oil!