I said it should be perfect .10 is right in the middle of my personal steering servo 'range' and acceptable doesn't = bad. I wouldn't run slower than a .13 for steering in anything, and I usually aim for .08 on most of my 1/10 scale rigs.

I don't understand the 'too fast' argument. If it's twitchy on the straight, add a bit of expo, but I want reaction as fast as possible to recover if the rear end is loose or to fly it if you're pitched from a bad or in turn launch. You're in the air for ~ .5 seconds at a time in the rhythm sections and on the ground even less in them.