Kevin, The Wayback Machine still has a copy of my old website where I had a page devoted to my Comfortweave story from about 9 years ago. It includes the amount they wanted me to order to do the job. I don't recall the amount of left-overs they returned to me but I also ordered a little extra Comfortweave for future repairs when the same material might not be available.

http://web.archive.org/web/20091027092458/http://www.geocities.com/jims68fb/Comfortweave.html