I found the blueprints for the risers and made myself some (I do CNC machining for a living) made them out of high strength machinable pvc. (http://i1263.photobucket.com/albums/ii626/NickMurray39/Bikes/7219B169-9BE6-430A-8452-1484DD75CF93_zpsh82mz2ed.jpg)
Those look nice, how much of a rise is that?