Andrias

I've just gone through the sealed lab and it seems that if you use the leadership option to destroy Zavor he won't drop his ring

How do you open the locked door in the sevile warrens which is too complicated to pick the lock?

I don't know the exact trigger but when you learn of the sholai leader you should be able to go back to him and there will be an option to tell him about it which will lead to you gaining 1 point in Sholai language