I have a Singer 301 I took apart - it has been in time out - frozen needle bar. I kept adding T-F or Kroil every few days and rocking the wheel a little every time I oiled it. Well. It moved tonight so I felt obligated to clean it up. That needle bar was coated with dried oil... I spent quite a bit of time on that machine - tension is rebuilt, lots and lots of cleaning. I still have to take apart and clean up the bobbin area - it looks pretty icky to me. Anybody got pointers? Come to think of it there is no bobbin so I'll have to see what can be done about that, too.