If you have not done it already then I would just replace the element.
Unplug or remove power from the unit.
This is very important because many units still have 120 volts attached to the element even with the control set to off.
Undo the screw holding the element to the back of the oven and gently pull the element into the oven.
Disconnect the wires from the element and install your replacement.
It is a good idea to clip something (clothespin etc.) onto the wires so they cannot disappear into the back of the unit before you get the new element attached.