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If you look Very closely on the diagram, on both of the cups the teeth used for installation only go half way through the cup. The inner half of the cup has no teeth around its circumference. This seems to match up with the bearings. Can you see what I mean? This is especially noticeable on this particular diagram when looking at the drive side cup as it shows the teeth do not go all the way through.
Dropped.Bars
Looking at those instructions, it would appear that the cups are meant to protrude abut 5mm from the BB shell. The picture shows that the drive side cup has no flange to rest up against the BB shell (like Shimano) and the non-drive side has no lockring.
Secondly, section 2 says that the BB spindle can be positioned "within a five millimeter band of a “normal” centered position" which suggests that 5mm exposed thread on each side is normal in the centred position.
At least, that's the way I read it.