This one has been stuck since I got it, about 6 months ago. The hand wheel will not turn and the needle bar and tension thingy seems to be free of rust. The insides are another story. I tipped the machine on its face plate(removed) and sprayed PB Blaster into the center cavity. It didn't drain down so theres a clog in the middle. If this doesn't do it I'm going to pour evaporust in and see if that will do anything. After all that, if its still stuck I'm going to start removing rods and such till I get it freed up. I'll take pictures of each step so I know how to put the thing back together.