Slide problem

We are having a problem with our bedroom slide on our 2006 KZ Escalade. When the slide is closed, it is down about 1/4" on the outside. We took it into the local RV shop and they said the problem is that the bottom/floor of the side, on the outside, is soft and has a crack and therefore is not supporting the slide brace when closed. They want to remove the whole slide, rebuild the bottom of the slide replace it for about $3k. I am looking for an alternative to fix this myself.



I was thinking that a sheet of aluminum could be placed over the soft spot/crack, to sure it up. My concern is that this will make a small lip or ridge that the slide wheel will have to roll over to close the slide. I thought about trying this from the inside, but I have opened up the inside under the bed and floor is raised -meaning there must be a top plywood sheet an air pocket, and then the bottom sheet. There is also metal braces and components to sure up the "box".



Thoughts or comments?




Thanks!