First, I have no idea what the real twist angle is in the Hornet. I use a centermount too, and just go by what feels right to me.
Second, you broke the so called ’articulation sphere’ inside the gimbal. I know, because I did that too. The TM Warthog gimbal does not like twisting torque.
I actually managed to glue mine. I drilled a couple of holes and glued some carbon fibre rods in there, for reinforcement. I also ordered a new sphere from TM. But then I went looking for a metal gimbal stick.