Are you certain that you have the right foot for your machine? Not all Husqvarna feet will fit every model. (Ask me how I know this.) Husqvarna machines are divided into "classes". My #1 plus machine's walking foot would not fit my Husqvarna Prelude 360 (a class 5 machine) which really annoyed me as the walking foot for each machine was well over $100. Perhaps it is the same with your free motion foot. The differences were not huge but just enough that they were not interchangeable and would not work on other Husqvaranas.