Can any body help me? I use cartomizers 99% of the time and really want to try some 306 lr attys. I have a bottom feeder and don't know if these will work. I tried a LR 510 atty and the hole in the bottom where the needle goes threw is to small. I have a regular 510 atty and the needle fits great and works good too. Now I would love to try a 306 LR on my bottom feeder (juice box) but I have no idea if they will work threw the bottom or if they need to be dripped from the top..or if the hole will fit where the needle goes up?? Please.. any suggestions 