I just purchased a secondhand Armada Megatron. It's an excellent figure, but there are some features I can't figure out. Can someone let me know how: 1. How do you remove the turret? I see pictures, usually combined with Tidal Wave, with Megatron's turret removed, and he's usually holding it in both hands. 2. I can see that I plug a minicon into a circular port on the back of the turret. Doing so allows this circular port to spin. I see no purpose to this; what does this do?