The oven microwave combination has functioned fine so far.  The only issue we had is that the upper control panel did not seat flush against our cabinets.  Whenever the touch screen was pressed the whole panel would wobble against the cabinet.  We called service and they determined that no adjustment was possible.  I suggested that I could make a shim out of 1mm plastic sheet stock. The tech agreed and I fashioned a shim that fills the gap so the panel no longer wobbles.