Another also, check the front amber clearance light assemblies, ie, cracked or broken.
For the rear slide, the top of the slide has rubber roofing material used on many RVs. Often rain water can pool on top of the slide under the topper awning. I found the Dicor chalking at one end of the slide top was not done well allowing water to leak into the ceiling of the slide then down to various places. With the slide in, I needed a bright light and a mirror to see the problem spot.
Ellen & Greg
08 National Dolphin DL-35Ci, RoadMaster Rear Sway Bar, Rear Trac Bar, Koni Shocks Front,
Workhorse W22, Kelderman Air Ride, Towing 2016 Smart Car