I just bought a varibox from ivape received it yesterday. Today I took a hit off it and got a sudden burst of air ,I tried it again and this time the burst was more powerful with a pop noise , I dropped it on the table as I thought it was going to explode, it was so strong it almost felt like some one blowing as hard as they can into your mouth. I'm using a Cisco 3.5 ohm Atty with a empire drip shield. Has anyone ever had anything like this happen? I don't know if its the mod or Atty or maybe not enough airflow .