Sorry if this is the wrong spot for this. I have an innokin itaste 1280 battery, and an aspire nautilus mini with a 1.8 ohm bvc coil. The battery is vv 3.5-5.0. I noticed the bottom of the coil where it contacts the spring spins freely. Is there a reason for this? When I refill my tank and put it back together the airflow is different from time to time. However the adjustment is the same. Why is this? I have some inconsistent problems with juice spitting into my mouth. Any advice would be appreciated. Also is my equipment compatible? Thanks so much!