Originally Posted by petefoss
My Four Winds 31W had the same issue. Easily solved with a larger pass through in the floor. As a temporary fix I removed the original pass through and dremeled the opening enough to fit a coupler since we wanted to use the rig before the dealer could fix.
I have a 2018 31W also and had the same problem. New to RVing I tried to use the sewer pipe coming through the outer door instead of through the screw out panel. NOT GOOD. Finally fixed myself with a dremel tool opening the screw out panel just enough to hook up sewer pipe. Perfect! and the screw out panel still screws in just fine.