To help with the JB Flooding and no vape afterwards this should help. As a test to be sure it was well flooded and this method works. I actually placed my finger on the air hole inside the box squeezed the bottle till the fluid is in the clear tube at the top of the atomizer and let it all get sucked back into the bottle as I release the air hole. Now that atty should be well Flooded correct? And if I try to hit it it is. But now holding the juice box in it`s upright position as if I was going to vape I give it a couple fast back and forth motions from side to side. Try it now. If you did it correctly with a fast snap motion it should be ready to use. This has worked time and time again for me. Hope it helps you. I also made up a picture to help show what I`m doing don`t know if it`s necessary though but I already made it so here it is as well.