The unfortunate thing is leaks can come from anywhere on the roof and show up in a totally different place... only thing you can do is get up there and go over your roof on your hands and knees looking close for any pinhole leaks... all caulking should be replaced at this point
Lots of work I know...
2004 Chev Silverado Duramax optioned past the max. 2009 Jayco Eagle 308 RLS 765 watts of solar, 6-6 volt batteries (696 amp hour), 2000 watt (4000 surge) whole house inverter.
140 days boondocking in 2016
211/2015, 196/14, 247/13, 193/12