I just bought a kangertech topbox mini, the guy at the store set it up for me and explained how to prime to coil and it worked great. I read online that the stainless steel coils are better for you so I decided to change it out. After I did so it is crackling and vapor is coming out the air holes at the bottom of the tank. I did some reading and thought it might be the atomizer so I went and bought a new stainless steel, however the exact same thing is happening with the new one. Any ideas on what this might be I'm at a lose and can't find any more info.