I just got this tank with my Joyetech evic VTwo and cannot for the life of me figure out how to fill the tank properly or assemble. I have been vaping for 8-9 years so its not like im a newbie but i feel so stupid. Looked for youtube tutorials as the instruction manual is not clear. Can anyone walk me thru step by step how to fill it properly? I am sure i have assembled it properly. Please help!!