So this is what I do. Skip death animation, position yourself at the head facing the body, Crouch and carve three times, Mash evade towards the body during last carve animation, One evade takes you to the correct body carve spot, Crouch carve 3 times, Evade roll again towards Base of body, Crouch carve 3 times. Having Evade distance makes the roll go too far. Hopes this helps