I have been in development of this robot for over three years and have managed to strip the teeth on one of the base rotator units.
Do they make the top rotating plate with steel teeth?
Unfortunately not. It’s made using injection molded plastic. You might consider a heavy duty base rotate upgrade:
lynxmotion.com/p-579-base-ro … servo.aspx
lynxmotion.com/p-837-heavy-d … ervos.aspx