Shortly after I got Matilda, I had thread breakage problems. I called the shop I bought her from because she is not something that can be transported easily. They told me it was more than likely a small bur down in the bobbin area and to run my finger around down there and I'd probably feel it. Sure enough, I felt it. They said to take a piece of fine grade sandpaper to it and it would be fixed, so that's what I did, and sure enough, it was fixed!!