Just wanted to give huge shout out to your post. "Once at this level, push the wheel at the 12 O'Clock position of the wheel. To decrease, push the wheel at the 6 O'Clock position. " OMG thats what I needed all along!
I agree. The solution is not obvious from reading the blogs. But, there were two issues that cleared up the rear speaker problem for me. One was that the connection between the main sound bar and the TV had to be optical, and the other was that the TV sound output format had to be Dolby Digital. I have a Samsung TV, so I don't know if this would work with another TV brand.