I have an 84 Catalina 30 SR for more than a year now and have had a problem keeping the throttle handle in position. It seems to ease off under power. Is there a spring or other devise that I can add on to prevent this from happening? Or do I have to replace the cable? Any advise is greatly appreciated.Sincerely, Wally Hammons"Ms.Cheeky"Redondo Beach, CA