I'm new to nitro and I don't even know the basics for tuning my jato. It can't tell if its rich, or lean. I always assume its rich.. But I'm wrong I know it. When I first got the car it ran awesome and started with out an issue. Now it's temperamental. And I have a pull start on it now and i just give up on wanting to toy around with it after I've gotten tennis elbow. Can anyone help me get in the right direction?