Servo savor tension is an individual thing. Softer is better for new guys that may hit the sides of the track the saver will save the servo horn or more importantly the servo, the downside in a swipping fast turn it may oversteer the car by being allowed to move more then you are steering. The owners manual should give you a recomended setting to start with then just adjust to your driving skill. To check it you should be able to turn your Tx Rx on and turn the wheels by hand if the wheels turn very easy it is very loose if they dont its tight. Hope this helps.