I was set up at the flea market today with several coins set out for sale. I didn't pay attention until I was putting up, but apparently some of the coins got hotter than I thought. Now some of the holders have a very noticeable bulge in it, especially directly above the coin. I noticed it on around 20 coins, some worth a decent amount. Has anyone ever had this happen to them? Is there anything I can do besides just reholder them?