Water still in passenger side floorboard-Help.

[jdurant]

I knew when I bought this blazer there was a leak going to the floorboard. Best I could tell, it was coming from the kickpanel area. Underneath the dash where the heater core and stuff was dry. I removed the cowl and put some sealent where I thought I detected a minor leak. Then I drove around with the carpet up for a while to see if I could catch it. Soon I noticed that now there was alot of water coming from where the a/c box and heater core are. I had noticed that the condensation wasn't really draining from the right place, but was draining. So this past weekend I took all of that apart cleaned, and resealed and put back together. I cleaned up the floorboard and resealed it. Now it seems to be draining properly instead of inside the cab.
I took it through a drive thru carwash yesterday with all the carpet still up and saw water coming in again from the flapper that opens and shuts for the a/c to recirculate located at the top of kickpanel (the quarter spherical piece of trim covers it). The thing is: If I put my hand up there thru the hole at the top of the kick panel area, then I could thouch hands with someone who has there hand down the cowl vent. All there is to seperate the two is another flapper that I assume is to shut off outside air for recirculate mode.
Which, even if it is shut is not going to be water tight.
I can't figure it out. Whats wrong with my Blazer?