My friend just gave me a bottle of Dr. Pepper Red Fusion tonight that he got from a back room of a bottling plant here in town. The bottle is marked "sample only, not for sale" because it was an original bottle sent to the plant before red fusion hit stores. The only problem is that the bottle is slightly inwardly out of shape, (like when you open a 2 liter and squeeze it while putting the cap back on) although the bottle is still sealed. Any ideas how to make the bottle go back to its original form?