Just bought new home with this microwave installed in cabinet over wall oven JT5000SFSS.  When using microwave, the wall oven's control panel fogs up and stops working.  Twice, GE Techs came out and said this microwave cannot be installed over a wall oven because it vents downward.  GE clearly states on website that it can. Can't seem to get qualified answers from Builder or from anyone at GE in spite of several calls to GE C/S and your Consumer Advocate Dept.  What now??