The case specs for the gen were never released or discussed? I just bought myself the XF factory V2 thinking it was close to 1:1 .. :/
Without the gen in hand, the replica could not realistically be 100% to the gen. But it did follow some design cues like the thickness should be less than the larger submersibles and the other parts should be proportionally smaller because of the 42mm size. And even with a gen in hand, there is no guarantee that all the dimensions can be copied. But try the factory will, it's just that the gen isn't yet with them.