Were it me, I'd put the pin on the centerline above your fingers as you said, but I'd put the CG in the thumb-positive quadrant, perhaps 3/4" to the right and 3/4" below the grip center. That way you'd have some latitude to adjust the dynamics with an XH if the reaction is too strong.
I have a Plum Power Groove drilled that way, and it gives me the reaction that you describe.
Hope this helps.
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Horrid in Doubles, torrid in Singles...
...that's The Curse of Dusty.