Nevermind, it turns out that I needed to edit the VB Thigh_r_calf_r and VB Thigh_l_calf_l transforms on a different axis than I was originally altering. However, the foot inverse kinematics are still not functional. Although in the IK blueprint animgraph preview the mesh and skeleton seems to respond to the virtual bones, preview of the actual animation files and playing shows that the bones are exactly moving with the thigh/feet. It almost seems as though EnableIK is set to false, even though it is definitely set to true (And I have tried it set to false just to make sure- still nothing)