Water leak
Looking at the photo, the leak is along the width of the cap running length-wise front to rear, about 2 ft long grey line. Where the bottom trim cap mates with the sidewall. I saw the paint line cracked so I investigated and noticed as I pushed on wall the bottom gap opened. I used toothpicks to open the gap after cleaning it with scraper. Then applied self leveling lap sealant, it crept into the gap from the toothpicks. When I removed toothpicks it appeared to fill in nicely and squeezed excess out. Waited about 12 hours and trimmed excess and then painted with leftover touch ups from FR.
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