I'm still pretty new to using an RDTA. About 2 going on 3 months. Basically my issue is it doesn't smoke the same from one coil setup to the next. One will be good and the next will be popping hot juice in my mouth or I'll be getting a mouthful of juice. It also pops and gurgles some times and other times it doesn't. The only thing I can think that's different is the size of cotton I use. Some times it's bigger sometimes it's smaller. I'm using a prime tank. I've post pictures of it taken apart and put back together.