Back around christmas i bought a Kangertech mini and a Kangertech nano. The nano works perfectly however the mini from day one hasn't stopped gurgling, spitting and leaking. I've tried the .5, 1.5 and RBA and the gurgling and spitting issue persists. It also leaks consistently, especially when i adjust the air flow. At this point i don't know whether I'm doing something wrong or if its defective. Has anyone else dealt with this?