We have a 2018 GD 337 RLS. Our dining slideout has a problem on the back end. It goes in and out but is getting a groove cut in the underside near the back, and has been spitting pieces of plastic and wood out in the corner by the couch.

Does anyone have an idea about the cause and cure?Click image for larger version.  Name: 1A633752-B66C-4FFB-A49F-D1C30529D0F5.jpg  Views: 41  Size: 878.0 KB  ID: 33658