Raise the front end & with the wheels straight ahead have someone move the steering wheel back & forth through the freeplay while byou watch underneath to see where the play is comeing from. When you adjust the gear like the fellow bolters described make shure the wheels are straight ahead. You didn,t say what year it is but if it has king pins they must be greased good & grease goes through the fitting. If they bind it will drive bad & not return after a turn.