Dobro, do you have any lower back injuries/problems that are the source of your discomfort.
I ask only because I had two VTX 1800s, one with a lower saddle (like the Corbin Young Guns) and one with a Mustang set up. While the Mustang was certainly more comfy than the OEM array it didn't get me any further down the road without lower back discomfort rearing its ugly head. Conversely the lower, more scalloped saddle did. I have four herniated or bulging discs one of which is the primary cause for my agita. The only thing that I found to help, is changing the positioning of my feet fairly frequently and getting off the beast at least once every couple of hours to stretch things out. that necessitates having either floor boards, highway pegs or both. I have not tried the high-test, custom saddle route yet, simply because I don't do a lot of really long haul riding and I have no assurance that one or the other of them will alleviate the problem.