Question Re: Barracuda ('68) Rear Folding Seat

Start by checking the action of the release lever. In its neutral position (up or down) it should be slanted toward the pass. side. Moving it to the drivers side will release it. There is a long hex shaped rod at the bottom that moves the two cams. When you activate the lever, does that hex shaft (and both cams) rotate 90*?
Thanks, yes the release lever on the upper part of the seat back operates and the rod down at the bottom does rotate, so the linkage I think is intact but the rod itself and/or the cam seem bent or out of alignment. If you or anyone knows the best way to open up the rear seat back for access to the mechanisms, appreciate any comments