Restacked 2 tons of pellets from their outside pallets last November into an unheated barn. The outsides of the bags were dry and the November air was dry as well when brought inside. As I've been using the bags lately I've noticed as I pull the bags off the piles it has noticeable wetness on the side that's been adjacent to the bag below it. Not sure where the dampness is originating from. The interior of the barn is dry. None of the pellets within the bags have exhibited any dampness. As most bags that I'm aware of, the bags do have 'pinholes' so they don't hold air. Could the pellets have a residual moisture that's passing through the pinholes and condensing between the bags? I don't recall this from previous years of ever occurring..