Beginner vaper. And so I bought this pen about 5 times ago and it also ended up being working fine for around every single day then your taste began burning. Figured this had one thing related to the coil and so I replaced it using the spare coil. The pen then did the same task after a later date. After consulting an even more vaper that is seasoned he said the atomizer coils burnt down rather quickly and encouraged us to get an innovative new coil as changing the cotton from the atomizer had been instead irritating. I needed to test it gets the job done, used Cotton Bacon version 2.0 cotton) cleaned the coils (i.e for myself though and took apart both coils, replaced the cotton, (my wicking skills aren't the best but.