Re: Toilet problems
Using adequate water when flushing is a must. Allowing your tank to fill 2/3's or 3/4's full before dumping makes for a 'gravity' dump and will generally empty all solids.
Single ply toilet tissue is recommended, and breaks down faster/better than the soft/fluffy stuff...and the less used, the better.
Some folks suggest adding water softener to the blackwater holding tank, and/or a bag of ice and water to slosh around while driving to help break down solids and clean the tank at the next dump. (As I can see down my toilet into the tank, if I am preparing to leave the campground I will add water until the tank is full enough to dump....then dump, and put a gallon or so of water back into the tank with the deoderizer)
And, something else to check regularly is the 'vent'....if clogged, you may have issues with dumping and/or odor.
Best wishes