ok ladies, when I got home from work, I dug out the old machine. I feel simultaneously guilty for keeping it boxed up all these years, and excited to try to use it. Can't start it up now (baby's sleeping), but tomorrow! Now, some help figuring out what I've got?! I can't find a model number on it; it seems there are pieces hiding inside the base (I hear them rattling around), but I don't know how to get them out; the bent piece of metal (see pic) seems to fit into a small hole on the base, and turn, but then nothing.This thing weighs about 150 lbs!