I just completed my 55.5" osage bow but while tillering it I heard a small crack. When I inspected the back of the bow I found that a small sliver had popped up. I unstrung the bow and scraped and sanded the crack until it was relatively smooth. I guess my only option would be to back it with something. My question is will a paper bag backing do the trick? If not how about rawhide? I would prefer paper bag because it is so much easier to do but do not want my bow to break. Any suggestions?