I have been checking out the chipboard site for quite a while now and have decided to join in the conversation. Just moved my $5 Chipoco chips into cardboard flips with the mylar windows to avoid bleeding from storng them long-term in the 20 pocket vinyl pages. Has anyone experienced any of the bleeding when using the cardboard and mylar flips or should this resolve the concerns? Have not moved chips other than the $5 Chipcos out of the vinyl pockets. Any others that pose potential storage problems? Not sure if you've discussed all of this before, but it's new to me.