1) Down thrusters. I’d let them slide in this case.
2) Did you test out your bot against obstacles? There is a reason why I suggested that people add helium elements into their bots: obstacles.
3) You can update your bot by telling me in the comments of the next update for Algobot Racing, and then updating this scene or making a new scene response.
Just physics and gravity at work, middle axle lets the circle move, while the axles make the arms spin around the thing. Gravity makes the arms that are in the top one fall down, which in turn rotates the circle and makes the other side rise up, and the effect just cycles around.