Many thanks for clearing that up, Chad. Sorry I didn't "get it" first time. Don't worry, I don't expect guaranteed success, just a fighting chance, so please don't be nervous! Nothing lost if I fail.
I now realise your term "polynodal" cuttings is very descriptive and is exactly what you do, of course. (Now the penny has finally dropped! Duh!

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It's just that I've just asked everywhere before and to date you are the only person I found that managed to root any stem cuttings at all! So feel at least a little proud of your achievements and give your self a bit of a pat on the back!!
Its difficult to experiment with many methods by trial & error, when one has such a limited amount of stock to propagate from, so any guidlines are welcome.
Anyway I have reserved another B. luxurians from Hill House today (its really close to me) and will pick it up next week. Whilst I'm there I'll try to find out their method too.(polynodal cuttings, no doubt ................

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Thanks again Chad for all your trouble, really appreciated!
best
weve