Greetings all,
As has been mentioned, I run Two Wheel Touring (www.twtouring.com). So of course, I'd like to think we've got some pretty good accessories for your touring-class scooter.
When a customer of ours has a need that we can't fill, however, there are two other stores I'd also recommend:
Dr. Mudspringer ( http://www.drmudspringer.com / )
Cycle Gadgets ( http://www.cyclegadgets.com /)
Neither of these shops cater specifically to the touring-class scooter market, mind you, but both have a wide selection of "general purpose" accessories that work on most any touring-class bike.
Both of these companies have extremely knowledgeable and helpful folks on staff.
Ride Well ...
Ian