Thanks for that Smudge.
I remember the article mentioned by V6; copies were sent to all crew members after the engine flameout incident.
I was under the impression that the Cladosporium had affected ALL the tanks and I remember pictures of the internal damage. I wonder if we are talking about two separate problems here: substandard metal and the dreaded CR.
Whatever, it took a lot of man-hours to put right.....and I don't envy you your time as a 'tank rat'.