Last week we pulled the original WH to replace it and found this condition.
This is the side view looking in thru the shell wall where the WH would be located. This is on a 1976 Sovereign
31' center bath and the WH location is just aft of the rear axle on the curb side. There's no obvious shell distortion, frame sag, or cracking. There is some very slight bending of the lower shock mounting stud on the curb side. It looks as though the right side outrigger is canted up, with the ones on either side of it being at the same elevation.
We have had a major Reno planned since 09 that has been delayed, but we plan to tear into this in November as an over Winter project. Frame repair is expected but this strikes me as odd. At this point we haven't pulled string lines to confirm dimensions, but has anyone else experienced this?