I have a barely over 1 year old  (delivered 12/26/2011)  GE electric baking/convection oven.  The oven started running hot right before holiday baking time.  I have a mercury thermometer in my oven showing that any time I set the temperature over 350 degrees, the oven went well over 400 degrees, pushing 450.  I could see cookies toasting before my eyes.  Also, I measured -37 degress using my husband's grill thermometer.   GE honored their 1 year warranty because they...