Dellorto 16/16 carb

[Rs fruitbat]

Hi , are any of you familiar with the dellorto 16/16 carb , I have this carb fitted to my Vespa pk50 , I can get the scoot running but I have a fuel leak coming from the front of the carb , it's leaking through the small brass piece in the middle of the carb and there's a hole on the right hand side as you look at the carb just under where one of the carb bolts go through .

It's difficult to explain ,I have a pic but photobucket is playing up , is there another way of attaching the image to the forum ,the scoot was an abandand project ,I'm trying to piece it all together , if anyone has pics of the carb they'd like to share that would help me to see if I'm missing something ,thanks in advance kev.