Hello, we bought our Heartland Big Country 36 foot fifth wheel last August, we used it for about a month and the winterized. We then opened it up again in April 2022 and stay in it. This unit is on a permanent lot and NEVER moves. My husband was taking off underbelly as 5here was a leak and the whole black tank jus5 dropped to the ground. Looks like it was never secured. Now what a mess to try to get it fixed! has anyone else experienced this? Have chatted with several people and they have never ever seen this before. Of course it happened Saturday afternoon so waiting to hear from dealership this morning. Thanks