Tom,
As per the others, don't worry about securing the Eckornes chair. We have two in the Windsor they didn't even move in our accident. We were hit by a dodge one ton diesel pickup when he verved across the centerline while reaching in the back seat. Hit us right behind the drivers side front tire - a direct hit to the propane compartment, I had moved over three or four feet and ended up going down an embankment before I was able to stop. We were force off the road, but the chairs didn't move!
When we replaced our chair and sofa in the HR Imperial, I sold the old ones to a shop that specialized in used RV parts. I don't think I got much over a hundred for them, but it was better than the junk yard. Got smart with the Windsor and order it with no furniture on the passenger side. Shaun's work and the euro chairs were added as soon as we could get to Oregon.
ken