So there was installed a sewer hose storage tube near house batteries aft drivers side. But the new Camco quality hose set I bought wouldn't fit and I understand lots of the newer hoses won't fit in 4" tubes.
I spent a while trying to figure something out and figured I'd pass on what I did.
Our kit came with two hoses but we usually only use the one unless we have an unusually long run to deal with.
I ended up buying a 5" square 9' long vinyl fence post and cut it nearly in half....one side around 2.5" longer than than the other because I created a right triangle and will use the slopped part of the post for main line storage and the vertical for the extra extension line.
Pictures say a thousand words right?..... so I will post some of what I did. Hopefully it helps someone else out....