Leaking 44idfs. Pourous?

Does anyone have any ideas to help me out here, this is the second one to do it and swapped it for another from where i got it from.
This is what happened
i have had one of my carby tops off and filled the fuel bowl with fuel. with in 15 - 20 minutes with out having run the car, the fuel bowl is empty.
what i noticed is that fuel is dripping from the throttle shaft out in to the engine bay afer i squirted the throttle and fuel jetted onto the butterfly. i believe this was leaking prior to squirting the pump
i then left it, no more fuel coming out of the pump jet. so still have 7/8ths of fuel in bowl, well i did have. fuel was still pouring out after that.
question is how does this happen. seems as though the carby is pourous.

i might just have to return it from where i got it.

i found this link on the 914 forums.

http://www.914club.com/bbs2/index.php?showtopic=89501&mode=threaded&pid=918391

that will help me and anyone else out there who has the same issue as me.

I've seen that exact problem with Empi HPMX's, once the venturi was removed I found cracks through the fuel bowl wall into the choke, but under the venturi. Sounds similar so definately worth a look. Leaking externally is usually accelerator pump diaphram cracked or not sealing.

Well got a replacement set off Rod Penrose, they're a set of Decade 44's. Got them running with 200 airs 55 idles and 135 mains, wow what a carby, they look solid too. They come out of jbugs if you want a look. Same setup as a weber except for some minor bits.👍