I recently upgraded my car to a brushless motor and the matching ESC. When I took it out for it's first run, I adjusted the steering on the controller to straighten out the front wheels. I pushed the throttle forward and it accelerated quickly. However, I found the controller steering wheel was much more sensitive and I had considerable difficulty getting the car to track straight. The slightest touch of the controller wheel would alter the front wheel track +- 10-15 degrees. Part is listed as in the manual as a 9g metal servo. My question: Is their another servo or adjustment I can make to decrease the steering sensitivity to help the can maintain a straight track without constantly tweaking the controller wheel? 
Image attached.
Image attached.