Good to hear Mike is using your Spyder, I was there a week before you and was not able to leave mine for the them to use.
Just a clarification on the use of "custom" seats, well seats are made to the customers choices of fabrics, colors, and even special designs, these seats are not "custom" made as to fitting the rider.
If one lives with in traveling distance of Corbin in Hollister California, they can call ahead and make an appointment for the drive in service. Then Julio and his team will then custom fit the seat to you. This can take up most of a day, some have just stayed in a nearby motel if they have traveled from a far distance.
This is an option for having a custom Corbin seat produced, nice advantage, there is no additional charge for this service.
Just wanted to clarify the two meanings of "custom seats".