Is there a way to specifically slow down youth development

[Koki]

I've run some simulations and kept track of CA/PA distribution because my aim is to keep the CA/PA distribution from the original database intact in long-term saves as good as possible. Hence, I adjusted youth ratings for all countries (they are about -15% now) and the results are quite nice and consistent PA-wise, only the young players develop too fast and there are too many with a high CA. In the original database there are two players of age 20 or younger who have a CA > 150. After some years however, there are multiple players with a CA of > 170 at an age of 20! More than 20 players at that age have a CA > 150. Any suggestions on how to tackle that issue and slow down development at a young age?