Hi Neil
Great to watch your progress. I made some split blocks several years ago using the version 3 style. I used a jarrah off cut to make the blocks. I don't know if that made any difference but they did seem to work well. I also used a large knob which helped grip the poles. I still have the blocks and knobs so can post some pics if that helps.
I did change the truss design after a few years to a one piece design like shown in the Highe book except I used 8 trusses not 6. I find this quicker to set up.
Your prototype is coming together quickly and looks great.
Rod
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