We had a TOL Lady Kenmore about 1973(Avacado) installed when I was just a kid with an interest in machines. It had no dial, all buttons and lights with Sani-Cycle. I don't recall any issues with the top rack, but as Toggles said, it did spin off the schmutz from the top of the rack, things got clean, and all the lights were fun to watch.
Because it did not have that "center washer post" clearance(GE) needed for dishwashers at the time, the bottom rack was considered huge and flexible, big enough to compensate for a top rack that was round, instead of square, where the square ones required less capicity on the bottom in order for the top rack to get clean.