A bit round the houses Rob but are you seriously disputing that an overseer was sent from H&H to get LB sniper production onto a full production line basis? And how does it grow with the telling? It is a H&H fact. I don't recall any mention of nail filing or hairdressing either.
And let's stick to the main protagonists too. Ainley, Jolly, Aldis, Ackland, Zeiss, Chanmce Bros are simply red herrings. H&H became the masters that got No4T conversion down to a fine art/production line basis and it was they who were selected to do the same at LB -. It's nothing to do with making rifles or hairdressing. It's procution lining and upping output.