Water leak by kick panels

Hi Guys, I got a problem I can't find!!!!!! I've noticed the last couple times I've washed my 70' Dart that the carpet is just a little damp at the bottom of both the passenger and drivers kick panels. I had this Dart completely tore down to nothing and put back together with all new gaskets and bushings but I'm pretty sure I missed something. The windshield is new as is the gasket to install it. I was told there are drain holes for the cowl and if they are clogged this can happen but I can't find any drain holes anywhere. I also checked the inside firewall and it's completely dry, it's like it's coming from behind the kick panels somehow. Any help is greatly appreciated. Thanks Dave!!!!!!!!!!!!!!