I started out by saying:
We have a long established convention in PPRuNe: 'Play the ball - not the Player'
I have now deleted posts that were unnecessary and rude and Yellow Cards have been issued.
It seems likely that the question may never have an answer but it IS an interesting question and it would be great if we can find an answer. If you don't have an answer - don't answer. Those who want a conversation and to swap information should stay, others can go to the Jet Blast forum to practise their skills. They will find the moderators there are not as lenient as I am.