ever since I bought my VX off the showrrom floor, auto places have tried to tell me my steering box is worn out and needs replaced and thet THEY WILL GLADLY ORDER ONE AND INSTALL IT, not sure why they would think I would allow that since it would be coming out of my pocket...but, there is nothing wrong with my steering box and it has no ill effects.
Make sure it is adjusted properly and also, check your wheel bearings if these are worn out the same effect can happen...also, make sure that the tie rods are tightened properly too. Do not believe most auto body shops, I do my own maintenance on my VX and save ALOT of $$$$ and the VX is very easy to work on.