The cougar seems to only carry 1 bomb on the right wing. In load out there are 8 stations, also shown in the DATA file.
Below are the data entry for the weapon stations. The Sidewinders work fine, but station 8 is only allowed to carry 1 object, leading to an unbalanced flight, with very limited A/G capabilities.
// Weapon Stations ---------------------------------------------------------
[LeftSidewinderStation1]
SystemType=WEAPON_STATION
StationID=1
StationGroupID=1
StationType=EXTERNAL
AttachmentPosition=-2.57,-0.55,-0.40
AttachmentAngles=0.0,0.0,0.0
LoadLimit=90.72
AllowedWeaponClass=IRM
AttachmentType=USN
PylonMass=20
PylonDragArea=0.01
[RightSidewinderStation1]
SystemType=WEAPON_STATION
StationID=2
StationGroupID=1
StationType=EXTERNAL
AttachmentPosition=2.57,-0.55,-0.40
AttachmentAngles=0.0,0.0,0.0
LoadLimit=90.72
AllowedWeaponClass=IRM
AttachmentType=USN
PylonMass=20
PylonDragArea=0.01
[LeftSidewinderStation2]
SystemType=WEAPON_STATION
StationID=3
StationGroupID=1
StationType=EXTERNAL
AttachmentPosition=-2.03,-0.55,-0.40
AttachmentAngles=0.0,0.0,0.0
LoadLimit=90.72
AllowedWeaponClass=IRM
AttachmentType=USN
PylonMass=20
PylonDragArea=0.01
[RightSidewinderStation2]
SystemType=WEAPON_STATION
StationID=4
StationGroupID=1
StationType=EXTERNAL
AttachmentPosition=2.03,-0.55,-0.40
AttachmentAngles=0.0,0.0,0.0
LoadLimit=90.72
AllowedWeaponClass=IRM
AttachmentType=USN
PylonMass=20
PylonDragArea=0.01
[LeftInboardStation]
SystemType=WEAPON_STATION
StationID=5
StationGroupID=2
StationType=EXTERNAL
AttachmentPosition=-2.3,-0.70,-0.53
AttachmentAngles=0.0,0.0,0.0
LoadLimit=1500
AllowedWeaponClass=BOMB,FT
AttachmentType=NATO <<----I tried adding USN to this, no joy
PylonMass=60
PylonDragArea=0.04
FuelTankName=Tank150_Cougar
[RightInboardStation]
SystemType=WEAPON_STATION
StationID=6
StationGroupID=2
StationType=EXTERNAL
AttachmentPosition= 2.3,-0.70,-0.53
AttachmentAngles=0.0,0.0,0.0
LoadLimit=1500
AllowedWeaponClass=BOMB,FT
AttachmentType=NATO
PylonMass=60
PylonDragArea=0.04
FuelTankName=Tank150_Cougar
[LeftOutboardStation]
SystemType=WEAPON_STATION
StationID=7
StationGroupID=3
StationType=EXTERNAL
AttachmentPosition=-3.43,-1.20,-0.51
AttachmentAngles=0.0,0.0,0.0
LoadLimit=1020.6
AllowedWeaponClass=BOMB
AttachmentType=NATO
ModelNodeName=LeftOuterPylon
PylonMass=10
PylonDragArea=0.02
[RightOutboardStation]
SystemType=WEAPON_STATION
StationID=8
StationGroupID=3
StationType=EXTERNAL
AttachmentPosition= 3.43,-1.20,-0.51
AttachmentAngles=0.0,0.0,0.0
LoadLimit=1020.6
AllowedWeaponClass=BOMB
AttachmentType=USN
ModelNodeName=RightOuterPylon
PylonMass=10
PylonDragArea=0.02