Like the title says, I want to remove the bottom cushion in back so seat backs will lie perfectly flat when dropped forward. I'm going to be sleeping in the back and want flat area, plus this will give me more empty area for storage. Has anyone ever removed the rear bottom cushion? How hard was it? Is it attached/integral with the back cushions? Any help would be greatly appreciated. Just looking for how many bolts may be involved and their location. By the way, this is a 2012 model.