Paul, I think Menningham Dampflokwerk have had a major hit on their work, buggering up Tornados boiler is one thing, totally mis-building the C15 boiler for Australia, thats something else. It's the first time a new boiler has been returned to the builders. The A1 Trust arn't to blame for the failing of the boiler, its gone through more hot to cold cycles than would have been expected of an A1 boiler in normal service. Yes, the old boilersmiths have a wealth of knowlage, which needs to be handed down to the younger generation, but getting the youth of today be interested in a trade which pays little for much hard and dirty work, thats really hard.
Ah, the joys of working on arcane, individual, and bloody annoying machines! Why do we do it?