DESTROYER DROID - Star Wars - Meccano Parts

This is one of my favorite Robot Architectures. Maybe not perfect (see below).
I have been wanting to build this one. Here it is !

Notes on Building:
1. The Frame is based upon the 3-JOINT BRACE Part. It links together the BACKBONE Part to the BELLY Part to the SHOULDER Part.
2. The 2-JOINT BRACE Part links the HEAD Part to the BACKBONE Part.
3. The TORSO JNT Part links the BELLY to the Top DOME Part.
4. The Upper and Lower DOME Parts are connected by the 2-HOLE STRIP Parts (interna