Thomas Borchert writes:

Regarding MP and RPM combination, there's a ton of information even in
the oldest POH.

Then why is there no consensus?

They have all been explained to him, in detail, with the factual
background and further reference. No voodoo about it.

No, all I've seen is argument and widely varying points of view.

Nobody really has the answers, although many would like to give the
impression that they do.

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