The two compass on the turm7x use the same place on the .tga and they are inverted in the 3d model UV. I fixed my turms rotating the UV map for one of the compass (is also possible to rotate the 3d model itself). Them both will end pointing to the same correct direction.
BTW the type 9 turms have only one compasson the deck, seems that the place for the second is just empty. I put the second compass on my type 9 turms too, but i donīt know if this is correct (historicaly) or not.
But i donīt have (yet) the FM's light mapped 7c turm, so i guess that mine turms arenīt usefull for you.