I've just had my rear axle replaced, out of warranty, as a "good will gesture". I would urge everyone to pursue Nissan to do the same. If you take your car to a tyre specialist and get a 4 wheel alignment report it will show that the axle is bent. I had to pay £270 for the labour costs which is a joke in itself. I could have had it fitted for half that but Nissan refused to give me the part. I could have had the shim kit fitted for a similar price but why should I accept a half assed repair on a car with a manufacturing flaw? It's a joke that Nissan did not recall and fix this problem but anyone affected should go after them ASAP. If you are in warranty great but even if you are outside warranty you should not let it go.