|This is for the sewing/serger foot controller that keeps slipping away. I showed my DH the ones I could order. He said just use a piece of adhesive sandpaper on the back of the foot controller, and it shouldn't slide. I traced the bottom of the foot controller, curved the corners, peeled the adhesive, and stuck it on the back of the presser feet. Then, I tried it, lo and behold, it works! Thanks to my DH woodworker.
Sorry, I edited from "presser foot" to "foot controller", is what the machine manual calls it.I was sewing, and added this tip quickly..