Hey guys, I've built this robot arm from a kit and I find it is really slow. Right now it is running on DC accutators with a 6.0 volt energy supply. Is there a way to replace the accutators with something.. faster? Plus, I found this really awesome gripper with an approximate 9 cm span. The only problem is it is connected to a Vex servo motor, is there a way I can modify the servo head piece into a DC motor head. Thanks!