The first leak that I found in my Outback was in the very front where two small closets were. They were both kinda under the nose cap. DW and I were in Yellowstone for the summer and I didn't get a chance to work on it until we got home in September. What I found was the leak was coming in where the nose cap met the roof. I cleaned up the caulk, added some new caulk, and covered the seam with Eternabond. Now, 5 years later, it has never leaked again.
John & Evelyn
2013 Dodge Ram Larimie 2500HD 4X2 Crew Cab 3.42
Outback 28 FRLS Sydney
Dodge Builtin Brake Control
B&W Companion Hitch
2 Trojan T105's
:C