A friend of mine brought me this osage selfbow, said someone gave it to him a while back as a gift...didn't know much about it and wondered if it could be shot. I looked it over and found a couple of small cracks in/around the knots in the wood. The first pic is a horizontal crack on the back of the bow, top limb about mid-limb...the second pic is a crack around a knot near the fade on the belly of the bottom limb. Obviously these concern me a little, should I leave them alone....is there anything I can do to these cracks or will these lead to the failure of this bow? Other than the cracks and it being a little scratched up, it looked pretty good to me. I'm not sure how old it is, but it was given to my friend approx. 7-10 yrs ago. Any feedback would be appreciated.