Self-centering (or lack thereof) in park and camber / caster / toe settings

I putzed with the valve body today. Tapping it backwards (ie towards the back of the car) makes the problem worse, it increases the tendency to turn to the right. I tapped it forward, but it was already close to the maximum it could be in that direction. I might have moved it a smidge more. With both front wheels off the ground, starting the engine doesn't give any sort of steering wheel kick. but it did still seem to be very touchy as far as staying still and not wanting to auto-rotate the tires to the right. With the wheels on the ground it was better. Moving the car slowly forward and reverse, the wheel feels squirrely, like it wants to turn by itself, either left or right. I don't like it. Maybe the belt could be tighter. I'll look at that tommorrow.