I have 2 FANUC Arcmate robots both with RJ3iB controllers. One is a 100iB and the other is a 120iB. The 100iB arm itself is no longer usable but the controller and external positioners are good. The 120iB is still in great shape but does not have any external axis, it is a stand alone. Can I swap out just the robot (manipulator) with the 100iB controller so that I can utilize the external axis.