[robnolimit]

How about TOE. Toe in, or toe out. If anyone has ever set the toe at dead 'O', you know thats not the answer. The steering is less than responsive, and the truck/car tends to wander. With 'O' toe, there is nothing to keep the steering joints 'taught', and the truck can wander around a bit. There are alot of differnt ideas about how toe should be set, and they change with tire size, suspension type, driving style....... Remember that the toe setting has to work in harmony with the caster/camber and others too.
A little toe in will keep it going straight, no wandering, but, the steering may be a bit slow to respond. This is a good factory style set up, for the average driver thats not paying attention too often. A little toe out will keep things going straight, but the car/truck will 'turn in' much quicker. Adding more toe out can help to increase the ability to make tight low-to-medium speed corners (autocross), but will make the vehicle react VERY quickly to any steering input at speeds.
Toe is something that I think is overlooked a lot at short track events, or even in our daily driving. A toe change is easy to make, and, don't panic, you don't need any guages or measuring equipment. IF you start with a known toe setting, lets say you've had it aligned, and you know where it is, you can make changes, try it out, and change back to the known set up any time. Start with a paint pen, or center punch, and make a mark on the front edge of the adjuster sleave for the tie rod end. Do this on each tie rod. From your 'known' setting, loosen the lock bolts and rotate the sleave 1 full turn, so that your mark isback to its same location. do this on each side. It is true that you may not know the measured toe setting, but you do know that it is +1 from your base setting. Any time you want to go back to the base setting, just loosen the lock bolts and go one full turn back. I ALWAYS do the same adjustment to each side, 1/2 turn, or full turn, that helps me keep everything balanced. Try it out, and watch the tire wear. You will never get an alignment shop to set your truck up just for you, they will always go to factory spec. (sorry Doc, there may be some exceptions) If you want it to fit you, you'll have to do it yourself.