Event manager Bill Hale said the Judges had needed at least 90 per cent to meet the head wool requirement.
"Got 83 per cent, fought hard, but couldn't get the break," he said.
The rules are aimed at protecting the integrity of the records system and the interests of others who have shorn records in the past.
Shearers Cam Ferguson, of Waipawa, and Adam Brausch and Ringakaha Paewai, from Dannevirke, had been preparing for at least six months, and fees totaling almost $4000 had been paid to the society as part of the costs of the event.
More than 2000 lambs had been culled from the flock on the farm in preparation for the attack on the World eight-hour, three-stand record of 1784 set by King Country shearers Digger Balme, Roger Neil and Dean Ball in 1999.
As the Judges headed home, the shearers returned to the shed today to shear the lambs, a warm-up for tomorrow's shearing competitions at the Dannevirke A and P Show.