I am a noob. I bought a prosmoke because I knew I wanted to refill and thought the cartriges hold alot. I also liked the idea of all VG. I am prone to alergies. I also heard their attys and bateries lasted a long time. I finally got my e cig working correctly after washing the atty. I've been vaping chocolate flavor (12mg) I don't feel satisfied and went back to analogs. I only smoke at most 10 light 120's a day usually only 6. Do I need to change e liquid or switch to another e cig?