it was after the 87-88 season. They had 98 then the growth allowance after certification to 103. the 88-89 season they did away with the growth allowance and the 105 lb wt class. they went with 13 wt class started at 103 then 112 then 119 and so forth. the last 2 wts were 185 then hwt with the max being 275.