Go figure

We have had this airstream only 2 weeks and we have had not one but two HAIL storms!  Go figure.  We have a leak in (or around) this window.  Derald took the 'eyebrow' off, the window out, re-caulked, resealed, took the Airstream name plate off, taped the lights and a number of other things to try to find the leak.  After 2 days he has chased it to the seam on one (or maybe more) of the 7 panels.  Let 'er rain, he found the leak!  He cleaned out the seam and ran some kind of caulking on it.  Well it is on it, under it or in it but I can't see it.  I am convinced.  If you aren't a handy man or woman, this could be a difficult and expensive thing to do.  (It still may be.)
Tanks have been updated and are ready to be picked up and we can check the other 'systems'.  Derald will read this and think, WE.....???
Onward...