I have been trying to do the same thing. I have been using one panel and sampling different strippers. None have taken it down to bare metal yet with one application. All have removed the latex paint but left the Zolatone Polamyx faded looking. I have emailed Zolatone for suggestions today and if they reply, I will post their reply.
And welcome to THE Airstreamforums. Keep us informed on your adventure.
-"You want to make it two inches - or, if you're working in centimeters, make sure it's enough centimeters for two inches."-Red Green