If there is a leak in the wall, there should be staining on the interior and rippled exterior. The floors should also show ripple and you can feel a soft spot if the floor is starting to rot. You can take a very fine finishing nail or brad, tap it into a suspected area and if it goes in very easily, you may have a rot issue. If not, a little dab of silicone will cover the small hole.
Mark & Susan
'13 Cruiser Patriot 335SS - '13 Ford F150 SCREW - PullRite Superslide - Roadmaster Active Suspension
Member - "Northeast Adventures RV Rally Group" & "Mason-Dixon Bunch"