Hi Tim welcome to the forum
do not know much if anything about the Hornet but was wondering if the Hornet has a servo saver, or is it just direct steering linkage normally Tamiya have some for of protection for the servo
If you do have a saver then check to see if there is no slop (movement) when on the servo and at the steering linkage. Hold the wheels and see if you can move them with out moving the servo.
sometimes there is a plactic part that is designed to flex slightly these can brake or become distorted (been known for people to wrap a tie wrap around to strenghten)
you may just have a lot of general Play in the wheel hubs and may not be able to do much with it i'm affraid
the other thing to check is that your using the correct Servo horn for the make of servo that you have there are three common fitments are 23,24,25 the 25 is normally used it fits most futaba and the clones.
but if the arm looks straight then i can not seeing it to be that
hope this helps, look forward to seeing you at some point down at the track , hope you have fun when you do get the car going
