I need to get a Milner 212 upstairs via a tight awkward staircase which would be difficult for more than 2 people to lift the safe. I thought that if I could remove the door then 2 people could carry each part. I have removed the 2 screws from the top hinge but there appears to be a locating pin between the screws which I don’t know how to remove. I have tried driving a screwdriver between the hinge & door with no success. Is it possible to remove the hinge & will the door then lift out of the bottom pivot without removing the lower hinge?