molds
<--  Axle for arms with black cups
<--Axle + Gear "Z shaped" moves arms
<--Spring and Main axle with Key in place
<-- Axle + Gear for legs "Z shaped"
O. G. Ogre, Motorized Body
<--  Axle for arms with black cups
<--Axle + Gear "U shaped" moves arms
<--Spring and Main axle , no Key
<-- Axle + Gear for legs "Z shaped"

Dr. Shriek, Motorized Body, with genu valgus ("knock knees")
<--Attempted Closeup of Arm Gear-Axle, one arm of  which must be bent 180 degrees, in order to be in "U shape"  instead of "Z shape."
                                _____
         ________G____/
  ___/

___                           ___
     \__________G___/

**This is what your final result should look like, in order for Dr. Shriek's gimmick to work properly!!**
This will allow the arms to move in  unison, instead of alternating forward and back.