SMOOTH JUMPING. The face of the jumps in the dirt are usually never square adn therefore you must find a clean line that lets you fly square to the ground. Then you can use the throttle to setup for the landing.
Also check your shocks again and again. These 1/10 vehicles punish the shock fluid and shock bodies. When you read through the XXXT-CR thread you'll find the info on how to build the shocks equally from side to side.