Wow,.. haven't seen this thread in a LONG-time!
Carpet is getting wet under my passenger floor
With the air on... it's gotta be the drain-tube.
It's draining ok outside by the fire-wall but, it's
Still getting wet. No antifreeze smell in the cab.
So, I think the drain- has a crack in it somewhere.
And yep, it's getting cold out now. I can do it in the garage
But, I've got no heat in there. Should be fun taking
Everything apart again!!

 

I now have to do mine, since it's summer going to bypass for now.