Barbara P Mars Hills , NC November 04, 2015 I used a cleaner on my jenn aire stove that took all the numbers off the knobs and we wanted to replace the grill with a burner unit We ordered new knobs and a new burner unit which solved our problem even though our stove was purchased around 1987. 11 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes