I have a 60" osage static recurve Im building and the back is just not trustworthy. Its one ring, but not what I like to leave alone. I have built 3 sinew backed bows and ZERO rawhide backed bows. This particualr bow doesnt need any extra draw weight or reflex, just some back support. Which way do you guys suggest I go? Rawhide or Sinew? The bow is about 50% tillered now. I stopped right there because I dont trust a few area's on the back. Thanks all