My original warrior had severely warped legs and all the usual fixes didn't work. So when the newer Isolation figure was released with the bird-jointed legs (the Warrior just has normal human-jointed legs) I snatched it up. Both figures use the same base body, so I just popped the ball jointed waist apart and swapped the pieces. The lower half was originally brown so I had to do a full repaint to match the blue torso. I also smoothed out a few seem lines in the head, and replaced the neck joint with a better one to improve mobility.
Here are the original figures. The brown Isolation and the blue Warrior.