hey guys, about 5 months ago, I got a smok vapepen 2.2 and all was fine, but about a month ago or so I started having problems. with 90% of my draws it burns my throat like crazy. I'm no novice, been vaping since 2012. I prime my coil but it still burns. The juice I've been using is Custard Shoppe brand which is a 75VG/25PG ratio and 6MG niccotine. when this first started happening I thought maybe it was the coil as the burning started after the first 5 draws, so replaced the coil and still had the same problem. this keeps happenening daily... any thoughts on what could be the matter? I also sent an email to the company, and they have yet to respond back.