When I got on the ladder to look at it, it had a space about 1/8" wide just below the join on the roof. The left side had moved and all the edge sealant (silicone) was shifted away from the edge trim. I think something might have hit it (bird?) or it was an Act of God. After all, it is now Paid For!
If I can figure out how to upload pictures, I'll do that tomorrow. I know I now need to add about 10 feet to the length of my porch so snow won't fall on the trailer roof. The porch is only 30" long; only the cap of the trailer is exposed.
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2008 Dodge QuadCab LB with 6.7 CTD
2003 Cougar 276
2004 Apache 8.5 Truck Camper