2018 Thor Four Winds 23U with the same problem as described by Hijacker7. I haven't had a chance to see if my water penetration is from the same source. Too cold in Michigan now to look. But the water came from the rear dinette cavity and spread all over the floor. Not sure how Hijacker7 fixed his problem but would be interested in learning how he resolved his issue. So Thor has not solved this problem after all these years since the original post.
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