Need an opinion. I put up about 100# of mulberry "rounds" about two weeks ago. They're roughly 4" thick and 12-15" in diameter. I put them in the basement, stacked in a way that air can circulate all around. I have a dehumidifier that keeps the basement pretty dry, but I see some gray-black spottiness has developed on the cut surfaces. Is this what I think it is and is the wood ruined? /infopop/emoticons/icon_frown.gif