so when i got into vaping i always drew on all my devices like cigs. basic mouth to lung hits. when i started getting bigger and harder hitting tanks/devices i started mixing in some lung hits. when i got my nautilus i always had that thing wide open and took long lung hits with a few mouth to lung hits here and there if i was craving a cig or trying to get work done and didn't want a foggy room. now that I'm into RDAs i pretty much only take lung hits cuz the airflow is way to open for a good mouth to lung hit. the past few days i have been tightening up the airflow on some of my RDAs to take mouth to lung hits and i just can't do it. ill be fine taking lung hits and then ill get the airflow as small as possible which is perfect for a mouth to lung but when i take a mouth to lung hit, even a very small one, it chokes the crap out of me. it literally feels like someone punches me in the throat and i begin coughing and choking for the next 30 seconds. i don't understand why this is. i used to take mouth to lung hits all the time with no problem. does it have to do with converting to straight lung hits? any thoughts? and f this has anything to do with it i have increased my water intake since i started cloud chasing