Could someone with a Tamiya Leopard provide the outside diameter of the ring gear (the one with the outward facing teeth) for this kit. I need it measured as accurately as possible with calipers if you have them. I want to use it for another project, but not if its too big. Any help would be appreciated. And of course if some one has a spare one of these that they would sell, please PM me. The Tamiya part number is 9335411 on kit 56019 or 56020. Thanks. PP