James,
Forget the Corbin - just go to home depot and get some bricks to stack up on your seat.
Get a Rick Mayer saddle - he is not taking orders in August since he is riding in the "IronButtRally". I bet no one from Corbin is riding 11,000 miles in 11 days.
Rick is an orthopedic nurse, saddle builder and long distance rider. His dad, Bill, designed the Russell All Day Saddle. Trust me here - I have a good friend with a BMW and a RickMayer seat. Corbin is a "wannabe".
Rick's seats = $376 in vinyl - $526 in leather for front and rear. This price is with a 10% discount for prepay or being a BA.com member.
Ride Safe Friend,
Dennis