the 1st unit would not sit flat on the counter.... the right rear corner was not even with the other 3 corners.
Wayfair was gracious in replacing it right away... the 2nd and the 3rd  microwaves had the same issue.
the serial numbers on the 3 were less than 6 digits apart...
Toshiba factory bad assembly.
Wayfair customer service was VERY PROFESSIONAL and HELPFULL without missing a  beat..
This was my first experience with Wayfair... 
I have now bought blinds with which I am very happy.
I will buy from Wayfair again... their customer service response has sold me on Wayfair as a fair business