I have a GE oven, model # JBS55DM2WW, about 2 years old and the oven does not get hot enough. The actual temperature is 100 degrees below what is selected. The temp sensor tests at 1100 ohms; I even replaced it just to be sure. The temp adjust function can only adjust the temp 35 degrees. I'm thinking it needs a control board, but just wanted to get a second opinion. Thanks!