Ahh yes , I know that , you told me last night. ( remember , I stalk you Niz and hang of every word you say.... )
Did the problem get worse after they swapped them and why did they swap them in the first place.
I am not having a go at you but as I also mentioned last night , one of the major probs with doing correct diagnosis is knowing ALL the symptoms and what was happening leading up to the prob.
cheers
Ken