2000 F250.. when I turn either direction periodically Ill get a grab and it wont return back to center until i manhandle it back then its fine. Doesnt happen all the time. Standing still truck running side to side powersteering box and pump work smooth no whine or bind. I thought of ball joints which Ill check this weekend.. BUT was wondering about the manual axle locks.. If they go bad would they be a possible problem if they malfunction??