See important installation note.
Drum re-heading notes: Natural skins should be soaked in fresh water until pliable. We suggest you check the progress every 5 -10 minutes. The thickness of the head also determines the length of time necessary to make the skin pliable. Thin heads require less time to become pliable. Skins should NOT be soaked past the point when they are pliable. Over soaking passed the pliability limit will cause the natural head to break down thereby causing an animal smell and a head that is unusable.