Have spent most of the weekend bike building and final fitting but it's all built up..
The cable routing is now along the bottom links as that is where the least rotation (growth) is. It's a bit close to the chain un-sagged but doesn't touch. Note the temporary cable guides- some plastic pneumatic tube helli-tapped to the swingarm.
There was a bit of fine tuning to get all the linkages to play nicely bit all works now.
Quick pedal about and pedals nicely. proper ride coming soon.