I was thinking (again) if y (hip) is raised x amount then both feet rise x amount, then it would be much easier to clean up mo cap files (they often come in half way through the floor and this way the motion would be retained)). Also, how about constrain x or z trans for specified frames (again to clean up mo caps - they sometimes wander about) and come to think of it a way of catching errant frames would be good so if previous frame = x and present frame = bloody hell! and subsequent frame = x + 2 then present frame = x + 1 Just a thought...