[motto]

G'day Darryl, here's a bit more info on the upper door.

A scribed line projecting each of the ends of the view port opening downwards will intersect the lower edge of the plate at a distance of 6-1/2" for the forward end and 14-7/8" for the rear, measured from the forward corner of the plate. The ends of the opening and therefore the scribed lines would be inclined rearwards at an angle of 108 degrees or 18 degrees aft of vertical.

Two Footman loops appear to have been attached to the door, both being 3" up from the lower edge to the centres. The aft one has the centre of the rear hole 13/16" forward of the rear edge of the plate. The forward one is 1-5/16" from its centre to the forward edge of the plate. This measurement is taken AT RIGHT ANGLES to the forward edge of the plate.
The holes and therefore the Footman loops are 2-1/4" between centres.

In regards to the distorted brackets on the apron armour support I would normally chisel the rivet heads off and punch them out if they are accessible. For replacement I would simply bolt them back in place. That would also be an advantage if you ever had to remove the brackets again.

It's quite possible David that pushing down saplings could have been what did the damage particularly if the roller had been removed as was often the case.

David