In my last 2 Wranglers (1997 & 2005) the back seat folded all the way up against the front seats. I apparently haven't done it much in this Jeep. I am finding that it won't fold up all the way, straight up and down. It acts like there is something in the way. Is this the case of does it just not fold up that far? Makes less room in the back for storage. Thanks.