Ok, I'm vaping over a year now and decided I needed a present so I got a Reo mini. I bought some cisco 306 atties to go with it and now I don't know how to use them!! There is a cap on them so I can't see the bridge and not sure if I'm supposed to take it off or not. I was planning on using a drip tip with them. I feel like an idiot but I don't understand. Could someone please come to my rescue? Thanks for your help.