Here are some additional build pictures. The gimble is pretty solid now. There is still one issue where if you turn to fast to the left the weight of the skull will cause the servo to over rotate and then the skull will try to spin around backward. I just have to get the left/right tab and servo arm in the right combination of position to remedy the problem. As you can see in the photos there is also a little work to do inside the skull itself. There is a chunk of plastic that will interfere with the left/right gimble tab. It will hit if you have the skull tilted forward, as if looking down, and then try to turn the prop left or right. A dremel took made quick work of the plastic.