I have some premium Dr. Pepper cartomizers that I was going to refill with some juice. They don't have the soft rubber caps like the other premiums, and they seem to be impossible to remove.
I tried my normal paper binder clip to open them, but all it did was bend the clip and the opening of the mouthpiece. Out of frustration I brute forced it and all I could do was rip the top of the cap off. Seems like the edges of the cap are glued to the sides of the carto.
Any way to get these off without ruining them? I'd like to be able to top these off with my juice. (I can do the condom fill, but like to have the top open to see when I start over flowing).
I tried my normal paper binder clip to open them, but all it did was bend the clip and the opening of the mouthpiece. Out of frustration I brute forced it and all I could do was rip the top of the cap off. Seems like the edges of the cap are glued to the sides of the carto.
Any way to get these off without ruining them? I'd like to be able to top these off with my juice. (I can do the condom fill, but like to have the top open to see when I start over flowing).

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