75159 type Death Star with my own pieces

So I created a Death Star with my own spare pieces. This often implied finding tangram ways to achieve the same shapes with alternatives pieces. I cannibalized a meditation chamber and a wakanda forever ship, the later being the only one I purchased to reuse the pieces in the build (I was missing too many triangular pieces) I followed the instructions but was not able to replicate most of the play features. As I want my boys to play with it I added two details; a meditation chamber for Darth...