I understand, if its something for you then roll with it since everything is cut already. if they fail then you will know what to do next time
In the future cut the drawers the other way for max strength. Trimming all the dominos as the last step after the glue dries will automatically fix the out of squareness you have going on as long as you make sure the drawer is assembled square if not the gouge wont be your only issue...
