Bernina stitch regulator question
Has anyone experienced a problem with their BSR dropping stitches when sewing on old fabric?! I'm quilting a top pieced by my great grandma, and the darn BSR keeps dropping stitches. When I practice on another swatch of just backing fabric (3 layers), it works fine, but when I switch back, it starts to randomly drop again. I'm using all-cotton batting, thread, and backing, and assume the quilt top is also all cotton. Help!