I am having some trouble controlling 2 servos with my arduino motor shield.
Start by detaching the motor shield. Put it in a drawer. Close and lock the drawer.
Now, connect the servo + to the battery plus, the servo - to the battery minus. Connect the Arduino ground to the battery minus. Connect the servo control wires to two digital pins.
No shield needed.
No idea what ServoTimer is, or why you think you need it. Servo is all that you need.