Tune just one axis, move the roll and watch the blue arrow. I am feeling the energy applied as it moves from side to side relative to the red dot. The assumption, move away from the red dot, it should apply energy to return it to the dot. Reality, as the blue arrow comes near the red dot energy is applied to keep it OFF the red dot. So, it keeps it just to the right or left of the red dot.
Came-7000 handheld with Canon 5D
SimpleBGC_GUI_2_40
Starting points as recommended on the forum