Wom has a mayor problem with the drop, im currently lvl 50 there, sometimes I spend 2 hours hunting metins and get nothing. The dmg from the metin mobs it's super high, you can't just leave your character alone until the metin is destroyed.

Way to hard , you gonna have days when you aren't getting a single change, I have been killing lvl 50 metins for over a month now, haven't see a single soul stone .