Edit the Ethan character animation in Unity 5.0

I have replaced the Ethan Character with a new taller model. When i apply the Ethan animations to the new character, the feet slide during the idle.

The source FBX animation is good, the feet do not slide. However once on Ethan, the feet slide around during the idle. I have made sure the IK is turned on in the state the clip and the bake to pose is turned on. The feet still slide.

How can I fix this?

The feet are slipping around the floor do to the interpretation of the Ethan Idle source file. When I put a my own idle test animation into the ThirdPersonAnimationController state machine, the feet do not slip around the floor.

Hope this helps someone,