John De Lellis

I need help stopping the Ice wyverns over spawning on a ragnarok server. I've read somewhere that the Mod Classic Flyers, that we do use, is causing it. But all I've done does not help. Instead of ten or even fifty there are hundreds and hundreds of them and the server lags badly due to it. I've tried placing foundations and changing the value from 1 to 0. No help. Any advice would be appreciated. Thank you!