Black Water Tank problems
Let me pass along an old "remodeler's trick". After dumping and flushing your tank, add a couple gallons (2) of clear water and then add one gallon of vinegar. Drive home as normal and allow it to swish around in there and then dump it again near home. Should solve your problem. We've been using this system for years, both on our rig and restoring previously "used" toilets most people gave up as lost... saved thousands of dollars over the years... which helped pay for the new RV!