Any help would be much appreciated, and please forgive any n00bish questions that may follow.

1. Why are my provinces losing Zeal? It only happens in former Catholic, Muslim and Pagan provinces that are at 99-100% Orthodox. They just drop to 0%, or 10% in the case of high-zeal Catholic provinces.

2. How many times must a Crusade be beaten before it dissolves? The Franks declared a Crusade in the (very) brief Papacy of Urban III, headed toward Antioch.
Completely ignoring the fact they had to fight their way across the entire Roman Empire to reach their target, they spent the next 5 years attacking either Switzerland or Tyrolia (excellent terrain for defenders).
Despite the Templars and other Order troops being almost wiped out, despite the Order leadership becoming the laughing stock of Europe for their cowardice and despite having only a fraction of their original numbers they refuse to give up.

3. Often the provincial governors will develop some sort of corruption related vice (Outlaw, Connoiseur, Administratively Greedy etc.) only to lose it in a year or two. Is this supposed to happen? Are the effects permanent even if they stop showing up on the report parchment?

Thanks in advance.