...it appears...
It appears that you're going to keep trying to push that square peg through the round hole, no matter what anyone says, based solely on conjecture since you can't use a manual that wasn't in effect at the time.
You can't presume that the coding was the same thing before the revision was made. You need the manual covering the time frame in question.
Look, everything is speculative in the absence of having experts look at the original microfilm and other records in Hawaii. There is only so far we can get based on looking at these various materials.
Everyone can look at what we have here with their own eyes and form an opinion.
For example, you yourself are speculating that the coding was done within ten days after the birth; we don’t actually KNOW that.