Thatís fantastic, thank you for you quick reply.
The wooden part is just a flat piece of ply, that runs from the seat framing of the gaucho to a piece of wood that is fixed higher up to the body (the top of the back of the gaucho) and forms the back rest.
In the ďSofaĒ configuration the ply slants to form the back rest, but when the gaucho is extended it fills in the gap.
Without the actual piece of ply, I canít figure out exactly (and accurately) where it runs from and to. The length is simple because it has to fit between the wall at the bathroom end of the trailer and a second vertical plate of wood next to the furnace.
One half of the clip is screwed to the top of the gaucho (I have that piece) and the other half is screwed to the loose ply sheet, Itís the other half that Iím missing.
Iíll get some photos tonight and post as well.
Thank you for your assistance, just let me know what you need for the clips.