Dear oh dear, Mike-Bracknell!
You seem to be utterly unable to lose face.
You've jumped from:
Also I would recommend NOT re-using another combined router/AP at the other end, as the inclusion of another set of NAT into the equation is liable to cause more headaches than remove them
To a general discourse on dodgy production lines in the Far East!
Just admit that a throw-away remark has been seen to be bollocks, there's a good chap. Take a few days off so we can all forget about it; maybe go fishing - then you can tell us all about the enormous one that got away.
To err is human. Putting your hand up and admitting it is manly. Strenuously denying it just makes you seem like a... politician (and that's most uncomplimentary right now!).
FBW