I'm chasing a clunk in the steering, it happens when going over washboard while the car is going straight - if I am steering it doesn't tend to happen, indicating something has play. The tie rods are new, the lower steering shaft is new, control arms are new. Is the upper U-Joint at the steering column field replaceable (what the workshop manual calls the swing yoke)? Are there other places I should look at that can develop play? I haven't yet checked the bolt from the upper steering shaft to the swing yoke, will try to do that soon. Can the rack itself develop play, and is it adjustable?