How do I change a factions culture?

[Kraut and Tea]

I had have this idea of creating a mod to ensure the decline and collapse of the satrapy factions. Mainly because they historicaly did collapse and because I do not like seeing the rise of a-historical satrapy empires.

What I intend to do is Take all the Seleucid satrapy factions and change their culture from Eastern to Hellenic, whilest their building chain remains Eastern.

This will cause an internal conflict of culture that I hope will restrict the satrapies to constantly being in battle with internal conflict, rather than conquering the world.

I extracted the: faction_to_faction_groups and the faction tables into my pack and changed some values. But my mod is not working.

Are there other tables that I need to add and edit into my pack? Is what I plan to do even possible?

[.Mitch.]

Requires the rendering of new startpos files, so use the Assembly Kit.

Edit the start_pos_factions table and change the state_religion variable for the factions.