im trying to get the ball off of the shaft, not the shaft off of the control arm, the allen on the end of the shaft is to screw it into the control arm. the ball screws onto the shaft itself, so you have to hold the shaft with a pair of pliers and turn the ball with a pair of pliers. unfortunately i have removed some of the finish from the ball even with a rag doubled up around the jaws of the pliers. i called horizon and they said that i was trying to remove it properly but that they are really hard.