Hell all. 1971 aristo craft 9teen. Boat worked great for a few hours. Got into the bay into no wake and throttled down for a hundred or so yards. All of a sudden the boat slows, stops and goes to reverse. It only goes in reverse even if the throttle is fwd. Rev it forward and it goes backwords faster. Prop goes counterclockwise no matter which way I put the throttle. Advice? About a year ago it wouldn't go into reverse, and the cable was replaced and worked fine until now.