i was so mad last week because i tried 2 make a gravity bong and when i was lighting tha weed it would jus burn up and no smoke would go threw the bottle!!! i do not no wat the prob is... every time i makea bong i would have to suck the bottle jus so sum smoke could come threw the chamber... the bowl i use is a socket tool thangy i see every one use on youtube but no smoke will enter the bottle!!!! does any1 know wat the problem is and have experienced this?