I had just recently bought a Vapir NO2 vape. It has been working very well up until recently, when the air flow started to become really clogged (restricted) for seemingly no reason, so I cleaned the mouthpiece and the mesh screen holder that attaches to the bottom of the mouthpiece by soaking them in rubbing alcohol. I had also just recently replaced both screens with brand new ones. Right now, even when I inhale while it is running on empty, the airflow is restricted, and therefore it is hard to pull. What the heck could be causing the blockage???