Mechanics questions

[zort]

1. When a grabbed guy is getting hit by more than just the guy who's grabbing him, how do you predict when he will fall? EDIT: He can take four punches from outside, except sometimes when he can only take two.
   
2. Why does flute sometimes take a few seconds to get everyone up in the air? It happens when there are lots of guys around, and because of Murphy's law, it's usually the Marks that take extra long to be affected ._.
   
3. Do heavy weapons switch teams when they get hit by an enemy's attack? Sometimes it seems like they do, sometimes not.
   
4. And an open-ended question: good, practical team combos?