The long-drawn out inquiry into the mysterious overweight on stayer Monza ended last night with jockey Stanley K. M. Chin copping a $5,000 fine. There was also a fine of $1,000 levied on assistant trainer Robert Mak who was not present when Chin weighed out on the Irish import Monza which went on to win a 1,400-metre event a Sha Tin on January 30. The inquiry, which centred on video evidence apparently showing Chin weighing in 2 lbs over the weight of 115.6lb at which he had weighed out, had lasted almost two weeks over three separate sittings. Evidence was taken last night from three representatives of the company which supplies and maintains the scales used for the weighing procedures. There was also further evidence taken from Monza's trainer, Peter Ho, assistant Mak, Alfred Chow, clerk of the scales, and Ronnie Yung, assistant clerk of the scales. Chin was also called again and the inquiry finally ended minutes before the horses left the paddock for the opening race on the Valley card. The stewards found that assistant trainer Mak, who had been delegated by trainer Ho to attend the weighing out in accordance with a stewards' instruction, was not present when Chin was weighed out on Monza. The stewards were satisfied that the clerk of the scales had weighed Chin in at 116lb but that the supplementary reader, placed behind the clerk of the scales, had subsequently indicated a weight of 117.6. Apart from Chin's fine, the stipes advised the clerk of the scales and his assistant to exercise greater care at weighing out and weighing in in the future. The stewards ordered a review of the procedures regarding the weighing out and weighing in and a new camera and video screen were in use at last night's meeting.