good morning I have this model I bought it in trinidad and tobago two years ago, I didnt use it for long long time but now i would like to use it, the problem is that i dont find the cotton piece on internet exactly like the one my e cigarrete has, i would like that you tell me how i can use it again wich pieces do i need to buy, like the tank or just the cotton piece, it was full of sand but the motor is working good. also i would like to know the serial or wich one is the model because i lost the box, im living right now in malta europe regards thank you