Aligned hinges as instructed. Added mattress and attempted to switch to the seating position and hinges failed immediately. The design of the hinges is substandard. Their curved shape increases the likelihood of failure. The only have a small rib stamped in them for rigidity.
It could be that the mattress suggested with this is too stiff/thick for these weak parts.
Substandard hinges
Aligned hinges as instructed. Added mattress and attempted to switch to the seating position and hinges failed immediately. The design of the hinges is substandard. Their curved shape increases the likelihood of failure. The only have a small rib stamped in them for rigidity. It could be that the mattress suggested with this is too stiff/thick for these weak parts.