Recliners in the 2014 Bighorn 3570 RS

Has anyone else had a problem with the recliners in the Bighorn 3570 RS? They are so loose that you cannot remained reclined without physically holding the recliner back. It's the only recliner that I have owned where I'm more tired when I get out of it than I was before I sit down.
im wondering if there is a way to tighten them. I have looked for a wing nut to tighten up but have not been able to locate one.

Regards
Kim Kidd