It's nice to see your so excited about
vaping. One suggestion if you don't mind. When you screw that cartomizer down don't reef too hard on it. It should only be just snug. If you find you're having to really crank it down, check the center connection on the carto. It should be protruding just a bit beyond the
threads. Over time it may get pushed in some. If you keep having to crank it down tighter and tighter you may bugger up the threads. You can pry that center post out gently with a paper clip or something if needed.
Enjoy!