I spent over five hours trying to fix my pfaff QE 4.0. I am wanting to free motion quilt, which I have done many times. The top thread continously makes huge loops underneath, causing a huge mess. I have cleaned it, changed my thread type,.changed needles, rethreaded a dozen times, turned off and restarted, and to no avail. In the past when this has happened, i would rethread and that would clear it, but but to no avail. I just had my machine serviced in October. I live 100 miles from the store, so this is a big prpblem. I continue to be very disappointed in this machine. Anyone with the same problem?