I am a sewing machine enthusiast. I refurbish old style Elna, Bernina, Pfaff, Husqvarna Viking, and other fine sewing machines meticulously. I replace old plastic broken gears with new ones and I totally clean and service each machine including oiling, greasing, and setting timings. I back up my work with 30 days money back guarantee. If you didn’t like it, send it back and I refund your purchase price minus shipping cost (see the details at the end of listing). Bid with confidence.