I've tried several methods for repairing tambour, some of which I learned on this Forum. I just finished up a couple of tambour repairs this past weekend, and have posted some photos of a repair process (along with some comments of what methods haven't worked for me) at:
http://www.silvertwinkie.com/tambour/index.html
A couple of the photos show the installation process, which may help answer one of the previous posts concerning how the tambour spirals are mounted. If others have suggestions on repairing tambours, I'd like to hear them...and I'd like to see some photos of how to remove and replace the small and large tambours under the sink!
gary