man, i just went thru 3 boge sr cartos. i punched them, filled em up with dragons tears 40/60 and slided into my new pro-v tank. filled the tank up, and started to vape. lo and behold gurgeling and flooding happens. and i cant get it to stop. so i fill another carto and try all over again. same thing. i went thru 3 cartos and who knows how much juice wasted. i finally just filled a smoktech prepunched (tiny hole) 3.o cart. now it hits fine. so im thinking i punched to big a hole??? idk anyone else experience this or know of a solution. i hate throwing stuff away