i need to move a 72"x40"x30" 900 lb safe down 10 uncovered wooden steps into my basement. the safe has brackets for a pallet truck on the bottom, so moving it to and from the staircase is not a problem. a few years ago we moved a 500 lb safe down the same stairs. we strapped it to a dolly, tied ropes on the top and slowly let it down step by step. i'm not sure we could do that with a safe 400 lbs heavier. so does anyone have any tips from experience or ideas? we are going down from my garage, not from inside the house, but the layout is not such that a winch on a truck or 4 wheeler would work. the staircase is about 37" wide, but the doorway is only 35". i would appreciate any and all input. thanks.