One other thing to try is a new cutter. I just bought a 60mm Olfa Ergonomic Cutter with a blade lock at the Mid-Atlantic Quilt Show. I got a great price on it because of the show, but after using it I can say it would be worth the money even at full price! My Carpal tunnel had been acting up w/my old cutter, I can't believe how much easier this cutter is to use. It just glides through the fabric and I haven't had trouble with it skipping on me. Maybe give it a try!