I feel your pain! This morning I was FMQ and my top thread kept breaking. I'd rip out several inches of stitches and start over. Finally, I cleaned out the machine. Actually, I didn't see any lint. I oiled it. Put in a new needle and re threaded it. The sample turned out fine; but I had to go out of the state. I am hoping the thread will not break when I get back to it as I am almost through with the quilting.