Well, Birtley built Komatsu 360's took a lot of 1000 series before Cat bought Perkins and politics changed the game, and they didn't suffer from the same issues. Unless you know for a fact that every Komatsu that made it past 4000 hrs was lightly used.......
I can match credentials with you, as I did work for Perkins and was specifically involved in the investigation into these Volvo failures, particularly inspecting and reporting on returned engines. Obviously there isn't too much I can say on a public forum, suffice it to say that there were issues that were specific mainly to engines serviced by one particular continental dealer, and unequivocally caused by poor servicing. I am aware of 1000 series shortcomings, most of which were down to getting numbers out the door, rather than inherent bad design. Perkins didn't have a monopoly on that problem though. It was more or less standard practise at one time for Atlases and the older (Eder) Cat ducks powered by 4 & 5 cylinder Deutz engines to be fitted with a canvas nappy before working on new Tarmac.
I don't gain or lose anything from this argument, as it's history, but I can assure you I have a lot more first hand knowledge which I won't be posting on here. Perhaps we'll meet up at Swineshead for a pint and a row.