Whadda-u-know, I learned something new
"For advanced users, note that you can set the front and rear bar in "middle" positions. For example, the rear E36 M3 Sway Barbarian has two adjustment holes. Conventional thinking would assume that you have two positions, stiffer (holes furthest away from the ends of the bar) or softer (holes on the ends of the bar). For increased fine tuning, you can set one side to soft and the other side to stiff. The vehicle does not know the different from side-to-side when it comes to bar stiffness, so in effect, you have a "middle" position."
Thanks for the tip!