I recently acquired a vintage 1968 Cox Campsquire. I took it out camping a couple weekends ago, and it hadn't rained and it wasn't really that humid either. Not enough to be noticeable, anyway, compared to the normal NC humidity. I popped it up last week when I got back to clean all the pollen off the canvas. It was pure yellow! DUSTY. Absolutely had not been rained on or driven on a wet road or anything, but there was a small spot of water on the counter. This pop-up is unique in the way that it folds up, so any water would have had to go through the vinyl cover, two layers of wood, and a handful of layers of folded up canvas to get to that spot on the counter. Did I mention there was no water inside or outside the camper to begin with? Well today I popped it up again and there was a very large puddle of water. Now, I could tell that the vinyl cover leaked through onto the wood when it rained, which is something I need to take care of ASAP. (It has always been garaged before I bought it.) But there was no way for it to get through the rest of everything to the inside. I've determined that it must be condensation. And that condensation is causing a slight spot of mildew to start along the bunk end zippered window canvas. Is there any way I can prevent this? If I stick newspapers everywhere while it's shut will that absorb moisture? Also, if I apply some kind of sealant to the wood, would that cause any problems if there was any moisture from the natural NC humidity already in the wood?