My Machine Has a Mind of It's Own!
I have had my machine for almost 1 1/2 years. It has always run very smoothly and I clean the bobbin case every time I change the bobbin. I've always used Coats & Clark specialty threads. The past couple of weeks it started making these grinding noises and the upper thread kept breaking. I asked on here about taking a machine in and a couple of people suggested trying a different thread. So I went to JoAnn's and bought some Sulky thread. Holy moly!! It's working fine! What's the deal? Why all of a sudden would I need to use a different brand of thread?