Hi Murray,
As it happens, my wife tried a Serfas Dual Density Pro for a while and never found it as comfortable as the Serfas that is on her mountain-bike, so it's currently not in use. If this is the right saddle, maybe we could work something out?
If that's not the one, I see there are some others listed on ebay (and cheap too!)
That said, I hear that the seat preferred on the road bike is rarely the preferred seat on a tandem.
