Nice save. Sometimes problems like this lead to new discoveries. When I first saw that you posted the photos at Photobucket (I am a subscriber so it sends me a notice when you upload new photos) I just thought that you had built it up as a complex composite on purpose. I've been thinking about trying this for some time but have not tried it yet. The sinew makes perfect sense. I've wondered about building up a complex composite blank using boo on the back, something lightweight in the middle like walnut and a thicker strip of osage or ipe on the belly that can be scraped for tillering. Jim