A very trick rush indeed. I have a question. I have the rush evo, and it is spitting up the bevel gears left and right, bone stock from the factory. Were you the one that mentioned you had a ball diff in yours? And if so, please tell me where it came from? And while I'm at it, I also have a Duratrax overdrive with an os cvr 15, and gladiator tires on it all around, this beast is tearing up pinion gears faster then I can put them in. Any ideas. At this point all help is apprecieated. Thanks $ircra$halot Garry