I just bought this MaxiVan like bus to convert to an RV. I want to leave a couple of bench seats, especially the most rear one; thishas the one big door and a big back window. The little levers at the front of the seats release just fine, but I can't seem to slide the seat back to get the rear leg arm out from under the horizontal floor pin thats down in the well. Not pushing back hard enough?? Doing it the wrong way ??? Any help appreciated.