Roger, I didn't have any free play in the wheel. It was just that if I made a slight correction to the right, the car would to move right too quickly. I thought that might have been something loose downstream of the box. I have less than an inch of play when the wheel is centered, however, the wheel was too tight when centered.

I couldn't find anything loose downstream of the box, so I loosened up the Vega box a bit so that it's firm at center, but not overly tight. Then added a touch more of toe-in, and increased the caster a bit. I haven't had it up to interstate speeds yet, but it steers much better than before.

When I get some more time, I'll take it out for a higher speed run. Right now, I'm hot and tired and done for the day.