Maybe I should ask how long your tillering string is. Is it the same length as the bow, or is it hanging down 6". Some may disagree with me, but I usually go from long string to full brace. If you are at 20" with a string the same length as the bow, you need to get to full brace as soon as you can. Make sure you exercise the limbs a lot before you brace it though. If the damaged wood is in the non-bending area of the handle you should be fine. I put a piece of 1x4 pine in between the jaws of the vice and the bow, on each side. This protects the bow from damage. Slow down a little and get some pictures posted so guys can help you. You will have a lot better chance of getting a good bow if you wait for help. Justin