Sorry, no. That won't help, the shape appears to be porked. Standby, I'll see if I have a work around.
First, create a text file in Notepad and paste the following lines into it.
00000004,0
,TextureName
ww1afg ,-2,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
ww1twr ,-2,370.558502,30.000000,514.357422,0.000000,0.000000,0.000000
ww1hgr ,-2,492.234711,30.000000,16.592012,0.000000,0.000000,0.000000
mpr0 ,-2,359.497253,30.000000,790.893738,0.000000,0.000000,0.000000
Then, you name the file wwifield.til, yes windows will complain, and put it into your C:\Hitech Creations\Aces High III\ah3terr\tiles folder
If you don't have a tile folder, create it.
Open the Object Editor and load the file wwifield.til then build it
Next, copy the wwifield.shp from here C:\Hitech Creations\Aces High III\newshps
and
Paste it into your terrain's texsrc folder C:\Hitech Creations\Aces High III\ah3terr\test\texsrc
Replace your .oba file with the following lines and run check for errors
F01GMS000, wwifield, -5280.000, 10.000, 15840.000, 0.0000, 0.0000, 0.0000, 1280, 0, 36, -1.00, -1.0, -1, 0, 0, 0, 0, -1
F01FTE000, entpnt, -4134.375, 9.999, 13927.257, 0.0000, 0.0000, 0.0000, 3072, 0, 8, -1.00, -1.0, -1, 0, 0, 0, 0, -1
F02GMS000, wwifield, 36960.000, 10.000, -5280.000, 0.0000, 0.0000, 0.0000, 1280, 1, 36, -1.00, -1.0, -1, 0, 0, 0, 1, -1
F02FTE000, entpnt, 38052.265, 10.000, -7006.219, 0.0000, 0.0000, 0.0000, 3072, 1, 8, -1.00, -1.0, -1, 0, 0, 0, 1, -1
Don't forget to reset the terrain size to 64? and build your CBM