I bought a set of coffin spokes from Craig from Image.
After some wobbling I spent some time looking very carefully.
Image had only counterbored the wheels 12mm but the hub projection was more.
This meant the wheel was not fully clamping down on the disc bell.
Couple if emails to Craig and Image and Image collected, took them apart, counterbored, repainted, reassembled and sent back.
Great support from Craig and Image.

Steve