I've started to install my rib slider bed in my T6 SWB. The clearcut campers instructions say 340mm from the holes on the back trim to the back of the frame. Their choice of words isn't helpful, do them mean the top edge (thin part of the angle) or the bottom edge (thick part of the angle) as looking at the frame? Can't really tell from the picture since the arrows not even align with the centre of the hole either.

