Mine was going completely nuts after the third run and the radio box was not wet at all so i ended up putting a traxxas receiver and jr servo in it now it runs fine but i did get rid of the BEC because it was overheating my servo whenever i ran my ib 4200's i also recently found out to fix your prop-not-moving problem put a grim prop on it the extra wait will make the esc think its in water and she'll spin a bit more also put a bead of silicon around the edge of that leaky water jacket!