It's a good thing I'm not terribly strong - well, maybe. I have a screw to get off - I don't want to break it... I keep putting oil on it - maybe some will get through and I can get it to budge. I am trying to tackle that old Elna today. I'm quite sure it has a broken bobbin gear down under. I talked myself into it last night. I can't get the free arm plate off - the screw maybe welded on or something... I am going to keep putting oil on it until it comes loose I guess. Meanwhile I cleaned up a couple other old machines - one is the Elna I bought the other day and the other is a rescued Kenmore - not a bad little machine - not my preference either - a good starter - better than the throw away plastic machines you buy these days.