Civil Unrest

[Fluvius Camillus]

So I've got a major problem brewing out east. Strangely enough, Type 4s don't allow me to recruit generals in certain regions, Petra and Carna for example. Also, it seems as though most of the regions below Antiochaia are more susceptible to civil unrest, is there any way to fix this? As for using the enslavement option, I've done that already, most of the towns only have a pop of 6000-8000.

I know, it can really bother me that some regions are extremely more discontent than others, after enslaving and a full garrison, still under 70% with no reason...