The stability events make it almost impossible to keep +3, even in the best Infamy and Legitimation conditions.
In fact, iirc the vast majority of events in the game I am playing cause a loss of stability; of course, avoiding expansion outside my cores (save for 1-2 more provs) makes stab problems nil, especially now that the 'Hunt Rebels' erased a lot of annoyance.
Basically, as long as you keep it in your pants *err, I mean 'cores'*, nothing so bad will happen as the greater rebel source is still nationalism.
So far so good, anyway, nice to see naval nations' maintanance problems solved (and no super navies in 1400, btw!)

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