HI,,,to be onest i wouldn think aboute that tool mark to much.....iff its not to deep, i think it should be fine... that area will be stiffer aniway, so i dont think it should be a problem.....the know u should leave it alone on the back.....just tiller the bow on the belly.....and dont aspect the limb to bend to much on that knot area...that zone will be a little stiffer thenn the rest of the limb.....i would put that limb with the knot in it, to be the lower limb ...this way u can make that limb a little stiffer....its just my opinion....good luck with that..