Hi there! Im new to vaping and my first set up is the Aspire Atlantis tank on the Ipv2s. I've been getting some good clouds on this for about a week or 2 w/ no problems and for some odd reason just yesterday I was vaping with some friends and I would choke when taking a long hit. And all through the night I couldn't take no long hits with chokinh/coughing. I thought it might be I overfilled it but I cleaned it out and my friends were taking hits with no problem and they are new to it too. So does anyone know why I choke and cough when taking a long hit?