Here's a great idea... I do this & it works great!
There's a center hole on the backside of a Kimborough servo saver.. just above where the spline mount is. Tap the hole through the front side.
Then push a round toothpick through the hole and trim off the excess.
This will take out ALL of the steering slop
("spring slop") out of your steering. You will FEEL the difference when you drive. MUCH more reactive steering.
If you hit something hard enough... it will snap the toothpick in half (still saving your servo).
If you do break the tooth pick - just drill it out and replace it.
TRY it... You'll Like It!