Sorry but no. I started a huge change on ball movement and camera because of the adition of loop pieces and right now it is totally broken. I did not save a backup I will upload it when solved.

Does the ball flies? Pretty strange. I can't imagine where it come from. There are no invisible entities. Never saw such a behavior.

The boosts have a soft effect. They are set to add an impulse equal to the force needed to climb a slope up piece with no acceleration. There is an angular speed limit for physx objects that limits the maximum ball speed that makes me to keep the forces soft.

Salud!