Ok, for starters I have already removed and sealed the refrigerator vent and heat shield. Which is parallel to the leak. I have also searched this forum extensively and of course my leak is unlike any others.
The drip is inside the street side closet on my 2008 28' International. I will assume it originates on the roof, as it rears its ugly stain after a good rain. Now, here is some important information. I ONLY see it when in my driveway when the Airstream is slightly TILTED forward. Reference pics below of likely candidates to the rear of the leak.
Open for suggestions and thank you for any and all wisdom/advice.
P.S. - Considering a new name, "Leak Chaser"