So we are having it fixed at Orangewood RV in Sun City, AZ (great shop). They found that there was a screw placed where it was not needed (or it was too large) and most likely the crack started when the screw was put in, and it has taken 2 years to get bigger. Since we have had no other work done in that area, I have to assume that Heartland placed the screw upon assembly. This was an expensive fix for us.
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