So yesterday my machine kept sewing when i took my foot off the pedal and someone on this boatd suggested taking the pedal apart and cleaning it. This morning i figured i'd go ahead and clean the machine before i tackled the pedal. I had the bobbin out and was taking the shuttle race out when the dang machine started sewing. Note to self...turn machine off when cleaning. Luckily it missed my fingers. Next the foot pedal...upon examination, i find it won't come apart. So i gathered up a big breath and blew like crazy into it. Well, whatever it was, that did the trick...no more ghost in the machine. I quilted a whole quilt today with no more problems.