I'm a noob, so forgive me if this has been asked. Do these ever stop popping? Are they meant for 100%VG? The one i'm running with 100%VG doesn't pop and smokes like a champ. The one i'm vaping 80/20 PG/VG is popping loudly, and the vapor production is so-so. The popping annoys me. It's hard to stealth vape when it sounds like your making popcorn, or frying bacon. Is this just break in, or do I need to just go 100%VG?