Can no longer read the temperatures around the oven knob
On the 720EF the numbers are recessed behind a small glass panel, so I think you are not talking about the same unit. If all else fails, I suggest you buy an oven thermometer from say Lakeland - they are about 4 to 5 pounds and are good. Run the oven, making a note where the marker is and see what temperature the thermometer gives.
Failing that, run the oven with the thermometer in all the time and experiment to see what the control; knob is pointing at for any given temperature.
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