Bayous do not use soft o-rings and will hold 9.2mm diameter atomizers very snugly. Sophias have a hand-polished finish, which can shave off quite a lot of material if the craftsman is not careful. This, along with the fact that it's polished, means that it's practically impossible (at least for me) to tighten the atomizer well on the mod after putting it in *any* tank. If you could measure the external diameter of the Sophia, that would help quite a lot, too.
When using the Sophia with any tank (at least *my* Sophia), I find it easier to tighten the atomizer very well on the mod, and *then* sleeve the tank on it. This ensures that the atomizer won't move when adjusting flow. To adjust the flow, I then simply turn the tank. Using the soft tank o-ring along with a hard drip-tip o-ring also helps some people but I find it unnecessary.
Just make sure the top cap of the Sophia is able to move freely (no wick blocking the threads).
-M