[High5er]

It's also possible there's no leak at all. When initially setting up and purging the air from your water lines, our Dometic 310 tends to blow air/water everywhere. You can get around this by running the bathroom sink while purging the air from the toilet line. You said you're on day 5, so it could also be spray from high water pressure if not using a good water pressure regulator (assuming you're not using the fresh tank). That said, if there is a leak it's almost always a simpler fix than pulling the toilet.