[Arkware]

yeah. we have the same model/year rig and had the same issue. I took it to my dealer to fix. The disconnected the utilities and removed the inside trim and jacked it up to repair.
They replaced the wear bar/rubber flapper. Part of the issue with this repair is the challenge of installing the staples top down into the main floor on the inside edge of the wear bar.

The slide will need to be alligned/adjusted for proper operation.

Hope this helps.

Ron