part #WB44K5012 , first time this has happened, thought oven was off, returned to find the lower element burned in two, top element turns on and off okay. We are wondering besides changing out the lower element, do we replace the oven switch itself and is that even possible. Clock is digital, has self cleaning thing on it, on the element it says 2585, and 240 , which I assume means wattage and volts. Any help will be greatly appreciated.