Art,
My wife found it online at
http://www.instawares.com/aluminum-s...-65532.0.7.htm It's about 1/8" in dia. larger than my drawing shows and the leading edge radius looks to be just ever so slightly smaller than it looks on the pictures of the N.11 I'm building but it measures correct. A parallax thing I guess. I checked out Arizona Models and what they offer still needs to be cut down and runs $95.00 plus postage. Mine was $68.00 with free shipping. It's aluminum about 3/16" thick, very sturdy but cuts fairly easily.
Finally working on the Bebe just got a lot easier. My wonderful wife insisted I pick these up today while we were out. Additionally she picked me up a circular cloth cutter and cutting mat at the girl store for cutting the KoverAll, man does that make covering much easier.
Scott