I think it is just the blown highlight that makes the space between the grips look bigger.
But if you look at the bottom of the flash where there's less highlight - the spacing is roughly the same size as the port holes with the brown and gray wires and that matches more or less how it is on the prop today
But if you look at the bottom of the flash where there's less highlight - the spacing is roughly the same size as the port holes with the brown and gray wires and that matches more or less how it is on the prop today