I have a 2011 189FDS It has the slide where the fridge and dinning table slide out as the 189FBS has the couch that slides out. I have never had a problem with it. Only once did I find water on the floor and I think it happened because the trailer was not level. I try to set it up over winter with the drivers side a little lower then the other side. The FBS version has a nice little spot in it because once you pull the slide out there is a nice little spot where a dog can lay down at the back and she's out of your way. Where the FDS there is no room for a dog if you are inside. Salty