Just what eveyone needs in a top rack is more room for plates that should go on the lower rack except there was so much space between the pins that lower rack capacity was reduced. Of course, with no filter there was a lot of food soil flying around so you did not want to give it narrow places to lodge. We often wondered why CU never noted the advantage of having a wash arm under the upper rack, but then they never loaded dishwashers the way most people do with prep bowls & pans. If they had blocked the lower rack of most dishwashers with bowls and pans, very few machines would have washed items in the top rack. Exceptions have to be noted for the upside down racking Maytags. Whirlpool and some D&M models would have been among the few before the 18 series KA machines that would have been able to do any washing in the top rack with items like bowls in the lower rack blocking water to the top rack.