Thanks, Robert for the great video. Maybe it was the light, but I never saw steam fill the tank during fill. Yours was a lot more "perky" during the fill. Was that the first fill? I guess you condensed shots taken during the whole cycle. Maybe your pump is stronger, but the ones I watched just gradually built pressure and the little side holes started spouting water, first like in a downward arc, then in a more forceful spray. The turning of the tower in those was a bit start and stop. I imagine that the modern detergent helped the results, but the cream of wheat pan coming clean is impressive. As for the pop up lid for drying, that used to be the norm for top loaders. The GE impeller portables did it, as did the top load GEs in the electric sinks. The D&M top loading portables with the fan on during the dry and the Hotpoint & WH machines stayed closed. The Preway gas dishwaser, after rinsing at 180 degrees, opened the drop down door about 3 inches to flash dry the dishes.
Maybe you could make some deflectors for some of the top 4 holes. I think they were to let anything that got past the strainer escape. Imagine if a green pea or two got put under the strainer by somebody and managed to make it through the pump without being destroyed then got blown up onto the glass. If you ran it with just warm water and no strainers and some frozen peas or corn, they could look like bullets coming out of a Gatling gun, at least maybe at the beginning.
Now, folks, as wonderful as that super hot water was, let me tell you what it meant in real life and why all of the dishwasher owner friends that we talked to before buying ours said, "Be sure it has a pre-rinse." If you had eggs for breakfast or had a bowl with some bits of raw hamburger left from mixing a meat loaf and put them in with any of that remaining on the dish, it was instantly cooked on when the very hot water hit the dishes. To make it even more fun, try it with an impeller machine like our neighbor's Kenmore builtin from maybe 57 or so. The wash started, no pre rinse, just a flush then fill and it blew the egg up into the glasses where it cooked on and only soaking and washing by hand with one of those soft scrubber things on the end of a spoon finally dislodged it. Mom made sure that never happened with our machines by rinsing the egg off.
I just happened to notice that the 1950 Apex free-standing model 970-1 was available with or without an illuminated interior as well as with or without the glass look-in lid. This was another machine with a Monel water heating tank. The early model only gave one rinse, later it was 2. Consumer Reports said it gave better results with two rinses. Like the Youngstown, its capacity was service for 6. Fortunately, our friends' Apex did not have either the illumination or glass. It might have resulted in an embarrassing situation when it came time to leave.