heres how my lightning decs are set
decals are TN000,TN001 etc......set for as many tail numbers you have..
D1 ..is a folder called D1 in objects\decals folder...I do it this way to find them if I need to add or edit the decals..if not do it the path to your a\c folder...
FilenameFormat=Fmk6\No5SQD\D1
TN...Tailnumber
TL...Tail letter code
[Decal001]
MeshName=Tail
DecalLevel=2
DecalFacing=LEFT
FilenameFormat=D1\TN
Position=-5.842,0.656
Rotation=0.0
Scale=0.60
DecalMaxLOD=3
[Decal002]
MeshName=Tail
DecalLevel=2
DecalFacing=RIGHT
FilenameFormat=D1\TN
Position=-5.842,0.656
Rotation=0.0
Scale=0.60
DecalMaxLOD=3
[Decal003]
MeshName=TailFin
DecalLevel=2
DecalFacing=LEFT
FilenameFormat=D1\TL
Position=-6.591,3.458
Rotation=0.0
Scale=0.70
DecalMaxLOD=4
[Decal004]
MeshName=TailFin
DecalLevel=2
DecalFacing=Right
FilenameFormat=D1\TL
Position=-6.591,3.458
Rotation=0.0
Scale=0.70
DecalMaxLOD=4