Just how close do think any of this stuff will be (factory balance)? I can tell you from balancing crankshafts that the tip of that bits angle will be insignificant compared to the overall bobweight. I'm sure the rods are out further than the difference in point angles.

If you are trying to duplicate a factory tolerance just drill the holes was my point smoke. They are notoriously horrible which is why the point angle is not worth debating.