I sanded over the peened heads, on accident on one of mine. It resulted in a loosening after a long time of hard use. I sent it to a maker to get a Micarta handle on it. Will post when I'm done. Try it, pay attention to the original head size and if you are taking a good amount of metal off, and if you do, you can probably either make a new one yourself or have a maker do it. I'm jonesing to see what mine turns out like.