I'm sure I will have a 1000 more, but these ?s are based on having owned SOB before. Do you have a shutoff valve in the water supply line behind your toilet? My 31sl does not. I ask because I once discovered a ruptured flush valve after traveling 400 miles to a nice campground. I was able to isolate it and use a pail of water to flush the toilet for our two week trip. Inconvenient, but better than going back home.
I also used a Sewer Solution system so I didn't really need to worry about sloping my line. What do you use to maintain a slope with the Waste Master hose? I see many devices, but some have bad reviews and some are expensive. I think I could rig a PVC gutter piece and it would save money. I am not a cheapskate, but I do admit to being a tightwad. That is how I can afford the RW.