Sylvia S Magnolia , TX March 24, 2021 Appliance: Model K5SSWH 5 QT STAND MIXER Stripped worm gear. My son replaced it with a genuine Kitchen Aid worm gear just in time to make pizza for a family get together. He replaced the gear and the grease with a spatula. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes