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but that is why we use heavy or light wedges & scale materials to balance it out
I do remember reading that if the pivot is to close to the heal it can hinder the dexterity & feel of the blade if...

Can't say I have seen dimensional rules or info on this either
The best advice I have seen is to measure as many blades as you can & work from there, as the old cutlers had it right & you will see...