John, You can also check the gap in your feeder gears as well as the gap on the take up lever gears. Another thing that comes to mind is the x cable tension, X-carriage bearing load, y rail belt tension and y motor belt tension. You can always swap the sensors on the machine and see whether they react differently Do all this while you are hopping and skipping and running in place! Hugo ************** Wondering what's for Dinner Tonight? Get new twists on family favorites at AOL Food. (http://food.aol.com/dinner-tonight?NCID=aolfod00030000000001)