I am sort-of glad, in a sad way that this loooooooong thread, involving many knowledgeable forumers, over a long time, that came up with a lot of good answers AND reached fruition had come to this. It's a gentle reminder of what I always thought and said about the transient and fickle nature of dewat/inert/deact - call them what you will - Bren tinkerers*. Here today, ask the question, get the answer and contribute absolutely nothing.
That's why any answer I give initially is sharp, to the point. They've all got something to contribute for heavens sake............. that's why they've all got xxxxxxg Bren guns.
* one even asked me with what authority I gave a detailed reply......