I have this machine. I haven't had any problems with it at all. Well..... I left a spool of thread on the bobbin spool and it got caught in the hand wheel and half the spool was wound on the hand wheel shaft before I found it. I got off as much as I could and left the rest. It's been that way for about 5 years and still sewing great. You have to keep it oiled. I oil about every 4 hours of use. Just a drop or two in the holes. I don't baby this machine at all and it keeps on sewing. I don't see how much can be wrong with a slightly used one.