[BRENT in 10-uh-C]

In the perfect world, yes you would re-balance however if it were off say 10 grams, I doubt you would ever feel it by the seat of your pant.

As far as "staking it", set it up on the Mill and drill every 90 degrees exactly between the flywheel and the ring gear. Tap the 4 holes and thread in a ¼-20 set screws and Loctite them in. It will not rotate. Unless you are using a rotary table and extreme accuracy, you would likely need to balance after this operation.

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