To check that the tub is level from front to back, remove the lower rack and pour 169 oz. (5 L) of water into the bottom of the tub. The water level should be near the center of both tub lower indentations at the front.

With the lower rack removed, place a level on the inside wall of the tub to check that the dishwasher is level from side to side.
If you do not have a level, try using a smartphone level application instead.

Make sure that the gap between the tub walls and the door liner is the same on either side.
