Trying to help out a friend. Machine acquired from original (now deceased owner) and appears in great shape, very clean. New owners not trained well, mostly homeowner experience but pretty handy. It came with the original clutch motor and they did a perfect job installing a servo. Couldn't handle the clutch speed, although they did get it to sew a few practice seams, then jammed it up and couldn't get it to work again. They called me. The safety clutch was engaged, but the shaft going fr