While roughing out a stave today I found 2 holes in the stave approximately 3/8" in dia. Some type of borer damage I assume. One is in the handle area and don't think it will cause a problem, the other will fall mid limb. It does not go the whole way through to the back, probably 1/8" of wood left. Can this be drilled out and plugged, or would I be wasting my time?