i live in a country where e-cigs are illegal, therefore, bringing them in always have custom risk and expensive. I, or possibly every other of my country vaporers will resort to ways to keep reusing our cartos as long as possible. so, i accumulate a few cartos and boil them to kill the bacteria and crap in it, i follow Pbusardo's method. today, i finally use 1 of the "cleaned" cartos, and after the 1st puff, and subsequent puffs, it just create this very dry and "sandy" hit to my throat. i took a new one out and it has no problem. is this pretty normal or something? any inputs from fellow peeps that boil their cartos?