The manual states that it reccomends at least 65 oz in but you may be able to get away with the Hitec. Do you think you can make up for the difference in the control horns??? I am using the 3421 on mine which fits fine unless you are looking at moving the servo further up in the fin?, but in doing that is it possible that the chances of some fin flutter could be induced as you add weight further up the fin?


Chris