Art,
Thanks for the report. The same thing has happened to a lot of forum members. I removed my undercover a week or so ago and inspected my welds and they are good. I have a small steel shelf on each side that holds the filon and aluminum frame in place. The shelfs are welded to the main frame. I have three welds on one shelf and 4 on the other. Not enough in my opinion. But my trailer is a lot lighter than yours. I guess if one cracks the rest will probably follow suit.
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