Hmm, the question of how dry your stave is has been answered, it isn't very dry. Blackhawk's right. I have gotten to the point where I seal the back the minute I finish it. I've had 2 or 3 do that this year. I had one stave wet enough that by the time I had gotten 2 or 3 feet of the back finished, the first part was already checking. That was a green one, but still... Hadn't had that happen before to me.
George