1. loosen the pressure on the foot sometimes I have to go to the highest (meaning less pressure) position.
2. Be sure there is no weight drag from the quilt itself\
3. Be sure the walking foot is the right one for your machine and with a walking foot you get exactly what you pay for. I bought an inexpensive generic one and didn't know how bad it was until it broke and I bought the quality more expensive one. The difference was amazing.