Hi all , just inspected a fire door and the gaps are in need of some adjustment . 

Top edge 3-5mm

The hinge edge is 3-1mm

Leading edge 3.5 but with a small dent above the lock at 6 mm. Now the area isn’t huge . Would you deed this as a fail ?
 

I have suggested packing bottom hinge over to increase within the 2-4mm tolerance and help an issue on the head . 
 

Would you allow a small area to have a bigger gap . May even only be by 1-2mm bigger max 8mm in height ? 
 

I don’t want to suggest a new door nor do I want to risk safety . 

The slight damage near the mortice lock faceplate can be easily repaired, just as you would with a normal timber door.  As you say, adjust the door position in its frame to achieve the 2mm to 4mm gaps.