Hi Jason,

re:
> I wonder if there is a distance from 0,0,0 that can be at issue or units maybe?

There can be an issue with things far from the origin but it's if you're something like 100,000 units away from the origin. There isn't any kind of issue with it for your case here.

Your case is just that one piece is an exact circle and the other piece isn't a circle.

- Michael