The only possibly confusing issues are the shoulder hinge linkages. Basically--move it all the way forward for fighter, back for GERWALK and battroid, and then angle the diecast parts down to lock(sorta) them in place. Also, the shoulder armor DOES move directly upwards (position reference is for battroid)---it's just quite tight. It's only a millimeter or two, but it does and it makes a difference for articulation/clearance.