Great advice keyz. I think the keyz (heh heh) are to (1) Always try to get what you think is the best legal arrangement possible for the kids and (2) stick to the legal arrangement.
In general, I think it is an LBS tries to work outside the legal arrangement to control a parent who disagrees with what the LBS wants that has a very high chance of backfiring in big bad ways.
Best case, a WAS is going to co-parent effectively with a LBS only insofar as it matches their own agenda. (And vice versa BTW.) The space for effective co-parenting is thus in the best case limited to shared agendas. In the worst case, the WAS shuts down co-parenting efforts altogether in reaction to the LBS not respecting boundaries and trying to control their choices (even if they have darn good reason for wanting the WAS to behave differently).
