Being new to vaping,I don't know if I'm doing something wrong, or am I over doing it or is it expected. I have two set ups, Aspire BDC and BVC attys on top of my stock eGo battery. I vape like I use to smoke analogs (4 days ago and counting) a bout 30 -40 cigs a day. I find about 1/2 way through the day, I loose my cooool menthol flavor and get a harsh flavor. I use vaporfi Menthol with 3x flavor. When I hit the atty, hit it 4-6 times in a row. Help....I don't understand.