I just picked picked up an istick with the Nautilus Mini tank 5 days ago. I have been vaping 50/50 blend juice and have put about 8-10 ml of juice through it so far. Today I started getting vapor coming out of the adjustable air flow holes at the bottom of the tank. I didn't notice any vapor coming out of them before. Could it be a bad seal or possibly my coil is going bad? I haven't noticed any difference with the coil or juice flavor. Is it normal to get vapor out of the vent holes and I just haven't noticed it before today? Thanks.