bloodsong, what do you mean exactly by "leg ik chain"? concerning the influence spheres, it is a known bug that the joint center will flip and you have to set it back each time you try to modify them. anyway, modifiying the influence spheres is the only way to achieve realistic joints. I wish somebody finds a way to get around this. also, I am still interested if somebody makes a P4 port from the modified joint parameters P3 characters I posted on the forum frederic