Your green Singer looks like my first machine. I still have it. I did a lot of sewing on it and loved it. I took it in to get it cleaned and whatever it needed after I got my Bernina. When I got it back it did not sew good at all. I am sure it did not sew that badly before the tech got a hold of it. Do you know what year that machine is? I think I got mine in the late 50's or early 60's.