@flo @stanleybmanly I forgot one step.
After I pulled out each element and cleaned the contact with a brush I tested each one with an ohmmeter. The small elements should read 20 to 30 ohms. The large element should be 15 to 25 ohms. The exact correct number will be on the print but that is not important. If the element is bad it will read infinite – above 100,000 ohms so it will be obvious.
You can buy a meter to do this at Harbor Freight for less than $7.00.
Harbor Freight Multimeter
Even if you are not working on the stove everyone should have one of these in their home. You can test AAA, AA, C, D, 9V batteries with it before throwing them away. It will pay for itself in a few months by saving batteries..