move your move over the mod in the left JSGME window and read the pop up.
Most of the JSGME mods have some or another drawback (like, switching on a certain 3d but messing up another or some such...)
The DOF camel ones give the Camel different skins as the plane is not skinnable in a usual manner...
Stuff like that
We try to reduce them as we go but some remain.
You really don't "need" any of them.