Does anyone know how judges get their bow scales calibrated? I?m thinking about the Easton Electronic Scales in particular. I?ve seen that they can take them to the judges conference to be submitted for calibration, do the scales get tweaked or does any inaccuracy in the scales get calculated and noted? I?ve got a set which I believe to over read by 4% (tested with certified test weights) which I?d love to have put right.