Thanks. Glad the video mod has been beneficial.
Someone PM'ed me and asked why I didn't "just" exit the sidewall under the lavatory. The answer would be ease of access. Working under the lavatory is next to impossible (for me). As is, there is reasonable access for everything I needed to do. Using the flexible bilge hose allows me to easily remove one screw from the elbow on the toilet, reach under the lavatory with one hand and pull the business end out to where it can be serviced.