I called and ordered the new seat on June 28th and it showed up today. Talked to Mark down there and he took all the measurements and my weight and said he could build me exactly what i'm looking for. When I opened the box I was pleased with my choice of fabric that I picked out from color samples he sent me to choose from. My choice has blue "specks" in the pattern and it really looks good on the bike. He was able to move me back a little farther since I did not want any backrest brackets in the seat pan. The fiberglass pan uses the stock seat rubber mounts and bushings. The installation of the seat was a bit tricky as they have a little too much padding near the saddle bag latches so it's a bit fiddly to get them to line up but it's workable. I placed a call down to Mark to let him know as he wanted feedback on the installation. So far the seat feels great but tomorrow will be the test as i'm going on a 230 mile ride, so we'll see how it does.
Putting my Corbin up for sale so watch for it in the "for sale" section.