Hello, new to the forum and new to vaping. I currently have an innokin cool fire 4 plus which I bought about 3 month ago when I quit smoking. At first it was brilliant, nice vape with plenty of flavour, however I'm now having issues. A few days ago my iSub apex tank started leaking which to be honest isn't really an issue as I didn't like it one bit due to the tank gaurd and the top fill which is hard to fill with a pippet. Anyway I bought an iSub g to replace it. It works fine no issues just like my last one however when I hold the vapour in my mouth it tastes slightly burnt. This is with a new coil which has been primed I have also started using better liquids which tasted great in the shop alas not so good in my device. I've even tried my old tank just too see if there's any difference, again with a new coil, and that is exactly the same. Tried both old and new liquid in both tanks and both are the same. Again the liquids tasted amazing in the shop on their devices. I very rarely run over 18watts so it's not as if I'm going to town on it. Any ideas? Just to clarify there's not as much flavour to the liquids and its fine if I inhale then exhale but if i don't inhale straight to my lungs I can taste the burn.