Hello welshwaffu and welcome to the cabin, I don't think I've seen you here as I would have remembered such a name!
Null Orifice A sensible warning. I recall hearing from an engineer on Hercules that, if they could not get one of them to self-start (lack of power and no power kart at an outstation) they would start another Herc and park it in front of the Herc without power. Then rev up in front against chocks and get the props behind windmilling until they could start them!! you would need to admire that from a distance...