Hello Blue!
This has long bugged me.
My best guess is that the Green Manuals are authoritative in that they
provide replacement parts for the varied parts that made up early machines.
It may be that early manufacturing and assembly practices were ad-hoc and not
documented - or at least, not considered important in Victa Parts Manuals.
It may be that we can only record noted difference by experts like yourself.
Those early days of Victa would have been exciting, but things were done on the run.
As we develop the History Forum we will need to rely on your expertise in having
extended experience with early rotos.
Cheers.
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JACK.