Next step was to try four of the green and blue squares together.
For this attempt I tried using a split ring again in the middle of the very long and wobbly chain. That still works for me.
I also used the skimmed down side rings but that didn't work as you can see. If you can't, then enlarge the picture and see how they tend to overlap each other. NOT good. Well not in my opinion.
So, back to the future - or should that be the past?
I still haven't totally decided what to do with the middles of the squares although I'm nearly 'there'!!! Working hard with 'you know who' on solving the conundrum.