Servo error

[beer nuts]

Servo moves left and right with wheel off ground. Once wheels are on ground, servo only steers one way. The other way the servo shakes out and back like it isnt strong enough to push to the right against the load of the ground.

is this an issue with servo saver?

AMP stock servo

 

[weave]

Yes you need a stronger servo. Are you using stock tires? They don't put the best servos in the novice Amps. You might also want to check the output voltage from the ESC too the servo and see if it's up to standards. 4.8 plus volts should be the norm for you're situation.