Great to hear you've found "part" of you solution! I've been
vaping for a month today and went through heavy chest very noticably the first week. As I've continued to read the forums I discovered the nic-fix without inhaling. It's a bit tough to get in the habit of, but it has helped me a great deal. When I NEED to vape for the nic-fix, but I'm
vaping a lot and start to feel heavy chest, I concentrate on the switch until my craving has subsided.
Draw the vapor into your mouth and hold, then exhale through your nose. The membranes of your mouth and nose absorb the nicotine more readily than your lungs, so you get past the craving without over tiring your lungs.
It takes practice! But it has helped me stay away from the analogs and that's the whole reason to start
vaping to begin with. Best of luck!!