first mistake, to tall of gearing... number 2, use a temp gun to determine your gearing (wouldn't have blown escs if you did...number 3 trash the castle cremations junk and use hobbywing, ive burnt up numerous castles running high gearing in many vehicles, hobbywings seem to be able to handle more current without frying. I like to bash with about a 60mph top end(I always break shit and fixing is half my fun).