Thanks so far....
Thanks for the expansion to the first answer......Pretty much as I expected. Think it might be pertinent to advice the CSD/CSL if was an MEL item as they may well, as in this case, wonder what the difference or problem is. Of course it also may not be this, I've read of RTOs due to nose and main gear shimmy all caused by wear on the shoulder of the tyres and even tyre pressures....
Axel