Okay... I had a little time at lunch, so I did some checking. I took three photos. One showing the left side, one showing the center and one showing the right side. I do see a raised area where the bar could be repositioned to on each side, but the difference is so slight that I doubt it would make much of a difference. I can give it a try tonight to see if it does something.

I did notice that the bars have color codes (white and green). I seem to recall that the color codes used to denote bar strength. At least that's the way it worked years ago (I used to handle accessory development for an automotive company).

Anyway, here are the photos. I put a yellow arrow next to the detent area where we could possibly increase tension... but again, a couple of millimeters of extra twist isn't likely to result in a big change here. First shot is of the right side... next is center... last is left. Enjoy!