The 5.2 is sailed with a soft rig. the diamond wires are set up slightly slack. to depower - allow the mast to rotate, this allows fore/aft bend of mast. to power up - reduce rotation [as far as pointing at shrouds]

The loosest that you would want the wires is so that you can clamp both to the mast with one hand [around front of mast] about 400mm above attachment point on mast.