Hello,
Today while I was practicing, I heard a rattling within the cover for the end of my tenjin. To my horror, a small piece of it had chipped off which is truly baffling to me as I keep my shamisen in only two places; either my lap when I practice or inside my hard case. I have never dropped or banged it against anything. So this leads me to wonder, has anyone had something similar happen to them? I am wondering if the humidity of Hawaii stressed out the kouki and caused an existing crack in the wood to finally give way. This was a used shamisen so I don’t know what kind of conditions it went through beforehand.