sniperkona

I pulled the carpet back and the foam padding. Dried it all out. poured water on windscreen and it emptied fine down the drain plugs. but when a/c is switched on the water slowly starts to come back. So next move will be to check the a/c breather pipe . The water seems to trickle down up behind the bonnet release catch. Has anyone done this before ? Is so how and where is it about ? thanks