Like Dolphyngirl said-- Leah Day modifies her feet to not move. She states that some need to be broken to work correctly. She uses a rubber band at the top of the foot to make the foot "hover" ontop of the fabric instead of hopping. I did use her method to break one of my quilting feet for my singer machine. It really did make it work alot better and I could see what I was doing alot better. Good Luck!