Several months ago, after removing the rear seat cushion, I was only able to fold down the wider passenger side rear seat back to about 10-15 degrees above true horizontal because there is some kind of bar or something solid that is preventing full horizontality. Now, several months later, I noticed it is totally horizontal. I don’t know how it went totally horizontal, but I don’t want to tinker with it and possibly not be able to get it back to that true horizontal position. But now I need the left seat back to be totally horizontal and it is being prevented just as the right side had been. Does anyone know the procedure to get the seat back to go totally horizontal?