Great shots Chris! Congratulations on the job and thanks for sharing.
All Maytags before the shredder stroke make waves. That is why even the wringer washers had tubs that curve over at the top. It has to do with the four agitator fins and the speed and the length of the stroke. The square tubs do it just like the round tubs. What's funny is how little the items in the load seem to be affected by the rocking of the water. They are sort of doing their thing and the water is doing its thing, but they do not rock back and forth. I wonder if you checked the water level at the beginning of the wash in the AMP and at the end if it would show how much, if any, sloshes over the top of the non-perforated tub.