I have had problems with the tumblers in the rear hatch lock getting sticky. Once the lock is unlocked, I've always had solid actuation of the deadlock bolts from the outside handle .... but only in one direction to the lock/unlock side. What I mean by that is if the deadbolts are thrown to the lock side, the handle will turn freely to the lock side until you get 1/2 way the other direction before the handle starts pulling the deadbolts out of the door. I always end up rotating the outside handle from clockwise limit to counterclockwise limit and back and tug the door as it always tough to figure out if the hatch is locked or unlocked.
Don't think I've ever used the inside handle!
2012-1/2 25' Eddie Bauer