What are you using for wicks and how are you coiling your Kayfuns? I tried using 2mm silica, folded twice giving me 3 strings coiled with 32g kanthal from 1.5-2.2Ω and it's ok. Today I'm trying 3.5mm Silica to see if that makes it better. I think that silica will last a lot longer than cotton but might try it at a later date.