[Gino]

there is a bolt, on the floor,up toward the front of the vehicle past the upright support post for the door. if you use the upright support post as a fulcrum by putting a wedge in back of it ( toward the rear of the vehicle) than tighten the bolt i referred, to you will see how it affects the door. It might be best to release all the bolts connecting the cab to the frame and start from scratch.