I purchased this oven the 5th of July 2018,  I wanted it because of the size and also like Black/Decker ovens, However the top burner browns the food before the bottom browns,or even gets done.  I have lowered the bottom rack as low as I can,  when I baked a cake in it today, had to put a piece of foil on top to of the pan to get the cake done so it did not burn, anything I cook does not cook the bottom as soon as it should, Have tried multiple temps with no success. I like the oven except for this problem