"ex's counselor who told the kids they were lying...the kids have also disclosed it to one police officer who then lectured dad and daughter about better communication and "behaving" without making a proper full report...and the kids have also disclosed it to a CPS worker, which has ended up being their word against his with no outcome"
And you wonder why I'm bitter about evil people being able to manipulate this system, the mental health workers and police? I have said it before, the only place you will find justice is in the dictionary. With certain types of people the mafia had better solutions. Your X would be pursuaded to keep his hands to himself if he knew what it felt like to be on the receiving end!