Kinda a crazy but gotta ask. Anyone know where I can get spare O rings that go on drip tips that fit most 510 cartomizers like Boge, smok and Ikenvape? I think I need a few spare ones for when I manage to break or lose the ones that come with the tip. Yes...I can take O rings off other tips and put them on the desired tip...but I'd just like to maybe have a few spare around. Anyone know of anyone that sells a package of those things? Just a few...nothing big deal?