Probably because the nominal situation isn't "no defects", it's that the defects are below a certain threshold. They can get a sample below a certain threshold but it's not a guarantee that the actual full scale production would be.
It'd be smart to give the tolerances some extra headroom on the second go-around, but I would guess that in order to get additional certainty on their sample, they would need to run their testing program for longer while the inventory is piling up. And I have to imagine with a production the scale of the Galaxy there are immense pressures to get that inventory moving.
It'd be smart to give the tolerances some extra headroom on the second go-around, but I would guess that in order to get additional certainty on their sample, they would need to run their testing program for longer while the inventory is piling up. And I have to imagine with a production the scale of the Galaxy there are immense pressures to get that inventory moving.
But it sounds like they gambled and lost.