I had the same problem with my repairman. When after 18 mo. and a threat to call the law, he gave it back to me. The first time I tried to sew it sounded like a thrash machine. I was NOT going to take it back. I looked it over, and decided to oil it. Thats all it took, after 2 mins. of testing it purred. When you take it back, have a piece of material with ypu and have them try it out for you!!!!!!!!!!