Sorry if this has been asked elsewhere, I did check but didn't find an answer that addressed my specific circumstance.
I just got these in the mail and while in the glassine envelope they seemed nice and flat but as soon as I took them out they curled like crazy! They are MNH, the gum is all intact but they seem kind of extra thick and dry?
How do I flatten them out? Do I just press them and hope for the best? Is there some secret trick?
Any advice would be appreciated!