[EB 2.3] Boii campaign: Question about the Kingetos/Druid mechanics

[Mervagands]

I'm currently playing a Boii campaign and am 50 rounds into the game.
The new version is great so far! But I have a few questions about the Kingetos and Druid mechanics, because I got two weak Kingetos...

1. Is there a way to remove the Weak Kingetos trait or is the FM doomed to live with it?
2. What are the requirements, that a FM will become a Kingetos instead of a weak one? Doing some battles didn't make them regular Kingetos...
3. According to the druid training description it indicates that a FM may can fail the training. How can I increase the chance of him suceeding to become a druid?

Any help is welcome.
And thanks for the great mod!