It's reasonable to want your fletched arrows to hit where you're aiming (or where you're looking, if you shoot instinctively). There are changes to your form you could make to change the POI, but if your bare shafts are already impacting where you want them to, then I think we can ignore form changes, unless it's something you want to explore.
You seem to have considered most of the equipment changes you could make, without success so far. One that you may not have considered is doing the opposite of what you would normally expect, and try stiffening the dynamic spine of your fletched arrows. This works sometimes to move the POI of your fletched arrows to the right (for a RH shooter) counterintuitively. I'm not sure why this works sometimes and not others, but I do know from experience that fletched arrows don't necessarily follow the same rules as bare shafts.
Another possibility would be to use a softer strike plate. A strike plate is similar to a cushion plunger. Softening a cushion plunger moves the POI to the right, and the same thing is true of a strike plate. Changing from a thin leather strike plate to a thicker softer strike plate, like a Martin rug rest, or to a lesser degree the softer side of Velcro, moves the arrow at rest further away from the side of the bow. However, when the arrow is shot it momentarily compresses the strike plate so the centershot of the arrow is not much different from a thin leather strike plate, and the compression of the strike plate reduces the outward bounce that the arrow would normally take on being shot.