Hello all. Newbie here. Just bought a Fuma from a local shop. The extra cartridges I was sold don't fit.. LOL.. I e-mailed Fuma to find out the the thread size. I am assuming they are 808. But not real sure about it. I will repost results of my reply if i get one. Anyway Only cartridge i have is kinda nasty fruity tasting. The repalcements are from CigElectric and are #16 full flavor. I'm not at all familiar with e-cigs in general.. Maybe some insight from you guys will help. Had to quit smoking for work purposes. and the e-cig really does help with a nicotine fix.. Thanks for any advice .. Rebel....