Recently I have been shocked at the huge variation in temps you find when using an IR thermometer to check the stove top. Right now as I speak the front corners of my stove are 300 degrees and the hottest spot in the back left is 620 degrees! That is a HUGE difference. It seems that you could easily have one of those magnet thermometers in the wrong spot while your stove over fires. Any one else notice such extreme differences?