Hi Warren
Inner 'H' struts were made the same as the outers using soldered brass; I used a slightly narrower upright (a bit more filing to make them appear slimmer) and soldered a piece of 0.4mm brass wire as the cross piece which was 'fun'

although once done and excess solder cleaned off it's surprisingly strong.
Flying wires are just my usual fishing line (1lb) with two holes drilled in the wing surfaces close together.
I did the crossed lines on the inner struts first and made sure they were secure and then did the main flying and landing lines by feeding the inner one inside the H strut and the outer one outside the H strut. Definitely a fiddly job that needed an optivisor

Hope that helps
Paul