So the other night I was working on a project and was testing the stitches and noticed that I could easily pull the bottom thread out of the seam with a slight tug. I worked and worked on it to get the tension adjusted to no avail. The next day, I hauled it over to the sew and vac store where there is a Singer trained tech. I feared the worst. I got it back today, all it needed was a good cleaning and adjustment. Now, it is like a new machine! $50 well spent.