Any walking foot for the 301 currently on the market doesn't do what it's engineered to do-work in conjunction with the feed dogs on the machine. Just because it "fits" on the machine doesn't mean it actually works like it should....Look at the width of the walking foot and you will see that the feed dogs are wider than the feed dogs on the 301. The teeth don't mesh with the feed dogs, which is what walking feet are supposed to do. Many people simply lessen the pressure on the pressure foot and use a regular foot. You can try releasing some of the pressure on the foot to see if that helps.