Thatís a first. Never heard Chesterfield before.
But really using your couch or dinner with the slide stored in the ďinĒ position will not damage anything. Itís engineered for use either closed or open!
PS we have the same model, but newer & itís a Forester. Have used ours in the closed position and used it this way on the road, parked in high winds,WalMart etc! No issues...
Steve & Leslie
Forest River 2018 Forester 3011DS
Honda 2010 CR-V AWD "Toad"