I've only been vaping for a few weeks and I have a smok priv v8 there it no wattage or anything just pop the battery in and vape. And it comes with a smok tfv8 baby tank with 2 coils both 0.25. The first one was preinstalled and I primed that one perfectly and it lasted me 2 and a half weeks. Today I changed the coil for the first time I primed it let it sit for 20 minutes and it tastes burnt. I don't know how to fix it. Could really use some feed back. And the juice I'm using is 70vg 30pg. And the first coil worked perfectly just don't know why the second one is tasting burnt after doing the exact same thing as I did the first time. I've also did the primer puffs. I filled the tank after priming it and let it sit and every time I take a hit, it's a burnt taste.