Question: A plane consistently missing the drop zone by c. 2.5 km/1.5 miles

[zovs66]

Just off the cuff if your dropping your paras on 1,75 and coming in on the left you can't do that, as that makes no sense.

Generally your coming from the left of the map, so you want to plot the drop zone in the center or to the right of the map.

I know the following is from SPWW2 but the principles remain the same.

Hunters from the Sky 3/45