Hey partel, First of all I am using FBBIK and Grounder IK for my UMA. I have a golf swing animation for the avatar and the IK is mainly used for the UMA to tightly grip the golf club. In the animation, the pelvis below part of the body, the lower part of the body is very stable even when the upper body is conducting a full swing. Now when I put IK into the UMA the lower part of the body goes up and down... and seems like he's sitting up and down while he is swinging. Is there a function in FBBIK or Grounder IK that I can use to turn off anykind of IK influence below pelvis?