Hi there,
Thanks for having a go at one of those old starter maps.
That is how Sth Vietnam started an initial starter map by me then Mission Bug took on the extreme effort of completing the map.
To level airfields
Go into fmb +
Use the fill tool in the objects list way down HEIGHT around the bottom of the list ( it will have peek, fill, and blur)
Mark around the airfield using fill. You will see the ground drop some.
When finished click save in fmb +
Go to your works folder in IL-2 1946/ maps/XXXXXXmap
Open the map_h tga in Gimp.
Source the airfield by zooming in to the area.
You will see a black outline around the airfield made by you in fmb+
Choose a colour in the middle of the airfield using the colour picker
Then paint using a 1 pixal brush filling in the outlined area then finally the outlined area.
Save your work for new map_h in Gimp.
Copy and paste from IL-21946/MAPS/XXXXX(map) to MAPMODS/maps/XXXXX(mapfolder and overwrite)
That should level off your airfield.
Cheers
Kirby