Ultra Space Water Physics. Seriously though, it's the first implementation of the ship, so some of the G-forces being off is not surprising. Like anything else, we'll definitely be continuing tuning work on the ship to make sure the handling and forces don't linger in the realm of the impossible. Keep in mind, when the Mustangs first went in, they bucked wildly like a jet-ski, but have been dialed in since. Same thing, different ship.