The reason your clear glassware come out with spots is you are not using Jet Dry. I use Finish which has a Jet Dry tablet built in, but I also use the liquid in the dispenser. No spots ever. We do give the dishes a quick preprinse even if it is not really necessary a probably is a waste of water, but there is never any crud left in the bottom of the DW. Also we do not have a disposal by choice. Never have had a clogged DW or a clogged sink in 40 years. (Not the same DW. I have always used a high loop, also without problems. I was unaware that Washington required an air gap until I read Terry's comment. Guess I won't sweat it after this long.