What I really wonder about is why they were not all the same. In 2020, it's pretty unforgivable to have machine work off that far. It was unforgivable in 1960, too, but things are supposed to get better over time.
Agree. But, (there’s always a but) I did buy speedmaster heads and I expected to have to correct some things on them before using them after reading what others here, and elsewhere have written.