I'll be interested to hear what your lawyer says. I'm worried that your ex realizes that if you fight him on seeing his kids it will look bad on your part (keeping the kids away from him), however the schedule was set and he is changing it so that can't be good either. I'm wondering if the fact that it isn't "set in stone" makes it legally ok for him to get his kids whenever he wants and he knows that it will help him financially so he will do whatever it takes. Again, curious what your lawyer will do.