you are right in that sense if the issue ramains for some reason after installing the servo to the car.

The way I understand it, the issue the OP is reffering to lies one step prior...simply when mating the servo horn to the savox servo, just after powering up the servo so it can first self center and then mating the splines, so that woul be even before connecting the horn with the steering link.

Anyhow everything will be covered for future references. 😉