One other thing I've done to remove some of the slop is to heat the nubs on the steering rack and bend them in slightly tightening the gap to the servo saver pin. Then add a little diff grease to it. You can also file down the sharp edges on the rack to allow it to slide easier preventing it from sticking.
If thats the car that I think it is, it has had a LOT of miles driven. Nice to see how much of a difference a little maintenance can make, you should really feel that with accuracy closer to the deadzone.
That's indeed the car you are thinking. It's good to freshen up the servo in a way that makes a difference. I haven't run this on a track but I can already feel the difference running it at home. This has been a fun project car!
