So my Spartan will sink in about 30 seconds,even with the hatch tapped ,when it's upside down,so the servo always gets ruined ,so,how do I water proof a water proof traxxas ,or any other servo? Silicone the end caps,how do you seal the spline ,pack it with marine grease ? O ring under the cap or on top of the cap but under the horn ? Or is it not possible when they are under water?help please