Ken,
Can't help you with the rigging screws.
I went to Warwick yesterday too.It's a great show,my first time.
Waiting outside for them to open I was amazed at what was before me,A sea of grey/white heads ,fortunately i blended in very well.
I don't know what the average age was but the total in years must have run into 5 figures.I think I only saw about 4 or five youngsters,
It makes me wonder where the building side of modelling is going to go.Most youngsters seem to want instant this and instant that today, It's the same with aeromdelling as well though. They don't know what they are missing but trying to get the message across is an uphill struggle.
Ah,well,I suppose I'll continue plodding on,Nothing stays the same forever.
Brian