Did a lot of digging around today...lots of rot! I'm going to have to rebuild the entire cabover bed. I think I tracked the leak(s) to the front seams. I cleared out all of the caulk on both sides of the trim, from roof all the way around, under cabover and back to house. Started getting dark so I couldn't reseal, but I covered everything with duct tape. I completely dried where the water looked to be coming in. I'm hoping that everything is still dry in the morning. There is supposed to be a shower so it should be a good test.
The plan is to reseal everything with a flexible, waterproof, non silicone caulk (DAP Clear). Now I'm wondering if I need to pull off the strip in the trim to check the screws.
Also, can I seal along the strip (inside the trim) with flexible caulk as well?
Should I be thinking about using eternabond, and if so, where? Under the trim? Over the trim?