One of the problems with Forest river is they did a poor job of sealing the end of the bunk door where the hinge is.
I have a 2005 Roo 21SS that never leaked inside the camper....but water got in the front door and deteriorated the door up about a foot and a half. I got the seal kit from them and when I went to install it the door was just in too bad of shape.
I bought a new door from Forest River and when it came it too was not sealed worth a hoot. I resealed the door, installed the new seal kit plus a couple of extra rubber seals at the top.
They sent me extra seals so I had enough for the rear door. When I took the rear door off it too had some water in the door but not enough to replace the door. i dried it out and resealed the door real good and put in the replacement seals plus the extra rubber seals at the top. I have had no more problems.
The bunk doors did not leak when we got 25 inches of rain in two days a while back in middle Tennessee. If it didn't leak then it never will.