Tension!!!!
Have mercy!!!! My new machine is set up and I followed all instructions for threading and winding bobbin. I am totally baffled about tension. There are no numbers on tension dial so I don't know what I'm doing. Top of quilt piece looks ok, but back has eyelashes. I have fiddled with top tension with no real improvement. Even loosened bobbin tension some with same results. New needle, same polyester thread in to and bobbin. I know there is a sweet spot for tension settings, but I'm so frustrated, I don't know what else to do. Ideas???