I am new to the RC world and just bought a Traxxas T-Maxx 3.3 rolling chassis and of course it needs a few thing but one thing is I have to replace the screws as most of the heads are stripped due to someone being careless. But i cant find a proper screw kit to get.. where should I look? Also I am thinking of upgrading to some aluminum parts.. id that wise or use stock? Any help or advice for a newbie would be greatly appreciated!!!