Okay so I just bought the joye510 - it came with pre filled cartridges but I also bought 5 empty cartridges, 36 RY4 juice, and a needle (which was hard to explain when i opened the package in front of my friends. haha) Anyway, do I leave the fabric inside the empty cartridges and fill it up? or do i take the fabric out and fill the cartridge? Also, I am literally opening my joye 510 now and I have to leave for class in 2 hours - I can't wait - I am only going to let it charge for those 2 hours - how horrible is that? I only need a good 30 minutes of vaping tonite.