Appliance sales people told us that our unit was too old, and we would not be able to get replacement knobs. Well, the off-the-shelf knobs never fit, and we were using our one and only knob switching it from burner to burner (kind of dangerous!). We stumbled on AppliancePartsPros.com, and they had knobs that looked very similar to the "one" original that we had. Ordered them, they fit and work great!! Got them exactly when promised, too! We will definitely bookmark the site!