Hi everyone. I am very new to vaping. I started out on Smoke Relief e cigs using pre filled cartridges but have now moved on to a joyetech E roll which I love . However I have been having a few issues namely with the atomizers. It was my understanding that an atomizer on the E roll should last between 4 - 6weeks. Both of the atomizers in my kit seem to be messing about. I am somethimes getting a really bad burnt taste and sometimes no vapour, Do I need to clean the atomizers , how often and how?? Any advice would be really gratefully received as I really want to stick with the E roll as I love the portability of it with the PCC etc.