Hi - I have gone through 2 walking feet in the last 4 months. They were made of plastic, and when I put the walking foot guide in the slot (not a little hole), the plastic broke, and I can't figure out how to fix them, and the store won't take them back. I have heard that there are metal ones available, but don't know where to look. My machine is a Janome 4000 Memory Craft, and it is a low shank machine. Any help is really appreciated.
Terry