Runde Upholstry on Cedar Cross road did the work. It was $50 and he did it while I stood around and then sat on it a couple times to get it "right".
I do not have a good picture of it. In photos, it doesn't look any different. Basically we used the same feel of foam, added 1/2" from about 4" up from the back all the way to the front. Then another 1/2" from the very front for about 5" back. Then sanded it smooth and kept the same width. It gives a little pocket to sit in. Not as good as the Corbin on my old bike, but the price was right. Haven't really done anything longer than an hour at a time on it as it is cold out.
Sigourney, that is south. I was down that way last spring to buy some shoe making equipment in Letts.