I just bought a 1997 isuzu npr landscape body with a drive on ramp for zero turns. Is it possible to flip the mower when going up the ramp? It seems like my front tires are barely touching the ramp when I drive it up. When I back it down slowly my rear bumper on my zero trun scraps the ground. Are these beds all the same on the trucks. It seems pretty steep going up and makes me very nervious when I see the tires start to lift as I am leaning forward.