I learned something (actually, more than one thing) last week when I was using the self-clean cycle on my new oven. Replace what no longer works. The first oven in our home functioned nearly twenty years. I cannot say the same for our other major appliances. We have replaced the refrigerator and the dryer twice. We have replaced the washer and the dishwasher three times. It isn't that the oven wasn't used. Eventually, the burners showed signs of shorting out or not heating efficiently. Or not working at all. I had to adjust the oven temperature up five degrees to ensure my tried-and-true recipes cooked through to completion. But, unlike the other appliances, we were able to limp along using a few tricks. Finally, we accepted the fact that we had to replace the oven, and we did so before Thanksgiving in 2019.