How to change stones drop ?

[WyppyOne]

Hi,i dont understand how to change stone's drop from metin stones
Somebody told me that you need diff for that ... if this is the case can you make a diff that allows you to drop +3 stones with a 75% ratio and +4 stones with a 25% ratio ?

Thx ... if i can modify it from somewhere else just tell me thx

[Mr.ChingLing]

Dif files

[WyppyOne]

Ok thx,i dont know how to make a diff so if somebody wants to help me it will be great